Abdelkader Outzourhit

Abdelkader Outzourhit

Université Cadi Ayyad

H-index: 30

Africa-Morocco

Abdelkader Outzourhit Information

University

Université Cadi Ayyad

Position

___

Citations(all)

4043

Citations(since 2020)

1774

Cited By

2757

hIndex(all)

30

hIndex(since 2020)

22

i10Index(all)

109

i10Index(since 2020)

62

Email

University Profile Page

Université Cadi Ayyad

Abdelkader Outzourhit Skills & Research Interests

Energies renouvelables

PV

Stockage

Top articles of Abdelkader Outzourhit

Energy, exergy, environment and techno-economic analysis of hybrid solar-biomass systems for space heating and hot water supply: Case study of a Hammam building

Inexhaustible energy sources are the focus of the energy industry for meeting the increased need for energy and reducing carbon emissions. Among various alternatives, harnessing solar energy has become a promising choice around the world. Parabolic trough collectors (PTCs) are an effective way to transform radiant energy into thermal energy, as well as electricity. However, these collectors can be improved by refining their design and tweaking the parameters related to thermal behavior. This may be done either by enhancing the surface area or improving the heat transfer coefficient of the heat carrying medium. These kinds of improvements could be achieved by making the use of nanofluids and by using inserts or fins within the collector tube. The current study provides an extensive review of PTCs from the points of view of their design, along with their thermal characteristics. Different types of nanofluids as …

Authors

Oveepsa Chakraborty,Sujit Roy,Biplab K Debnath,Sushant Negi,Marc A Rosen,Sadegh Safari,MEH Assad,Rajat Gupta,Biplab Das

Published Date

2023/10/17

Improvement of melting performance in a longitudinal finned latent heat thermal energy storage unit

This article presents an analysis and enhancement of the charging behavior of a double‐pipe LHTES unit with longitudinal fins for concentrated solar power applications using a finite element numerical analysis approach. The finite element approach is applied to this numerical analysis by using “COMSOL Multiphysics” software. The investigated LHTES system has an operating temperature range of 180°C‐300°C and uses “DelcoTerm Solar E 15” as the heat transfer fluid (HTF) with a eutectic inorganic mixture of sodium nitrite and sodium nitrate as the phase change material (PCM). While also taking into account the impact of the tube material and the number of fins, the primary goal of this study is to evaluate performance improvement by changing the thickness and number of fins in a linked manner without changing the storage unit capacity. The results show a maximal impact on thermal performance which …

Authors

Imad Ait Laasri,Zakaria Elmaazouzi,Mustapha El Alami,Abdelkader Outzourhit,El Ghali Bennouna

Journal

Energy Storage

Published Date

2024/2

Fabrication and characterization of ITO/CuS thin films-based thermoelectric generators

In this study, thin films-based thermoelectric generators (TEG) were fabricated using the flash evaporated copper sulfide films and radio frequency (RF) sputtered ITO films, deposited on 26 × 76 mm2 glass substrates. After careful study of the Seebeck coefficient of both films, without and with annealing at 350 °C, the open-circuit voltage for the eight junctions was studied as a function of the temperature gradient. Applying a temperature gradient of 40 K, the obtained maximum voltage is shown to be 10.9 mV, which increases to 15.6 mV by annealing. The internal resistance of the TEG remains unchanged, possibly due to the inverse evolution of resistivity during the annealing process of the CuS and ITO films. The obtained outputpower is 13 nW for the as-deposited films and increases to 26.2 nW by annealing.

Authors

L Amiri,A Tchenka,M Bousseta,S Elmassi,C-T Liang,A Alsaad,L Nkhaili,A Elbacha,A Narjis,A Outzourhit

Journal

Vacuum

Published Date

2024/6/1

Phase transition, structural, optical and thermoelectric properties of spin coated CuxS thin films

Copper sulphide (CuxS) thin films were deposited by the spin coating method using copper acetate (Cu₂(CH₃COO)₄) and thiourea (CH₄N₂S) as precursors. This simple technique was shown to produce thin films with high quality in terms of tunable stoichiometry and physical properties. In fact, the room temperature structural, optical and thermoelectric properties were studied. It is observed that the annealing during 1 h at 250 °C and 300 °C results in the transition from the covellite (CuS) to the chalcocite (Cu2S) and djurleite (Cu1.95S) phases, respectively. Optical measurements show the formation of absorbing films in the visible range with a transmittance lower than 50 % for all phases. The covellite phase is found to be thermoelectrically interesting with a power factor of 12.3 μWK−2m−1, while the conductivity of the djurleite phase (281.7 Ω−1cm−1) needs to be improved to match its high Seebeck coefficient …

Authors

N Aghad,A Narjis,L Amiri,S Elmassi,Ayman S Alofi,L Nkhaili,A Alsaad,A Tihane,Rachid Karmouch,Hind Albalawi,A Outzourhit

Journal

Physica B: Condensed Matter

Published Date

2024/1/15

A Comparison of Different Rear Irradiation Modeling Methods in a Bifacial PV System

Bifacial module technology is increasingly used in a multitude of fields (building integrated photovoltaic, agrivoltaic systems, and PV plants). In particular, this type of module can be a better alternative for efficient agri-greenhouses than monofacial ones as a result of the additional energy gain from the rear face. Also, the evaluation of the additional energy gain generated by bifacial modules is crucial for the design and installation of photovoltaic plants based on this technology. This gain depends mainly on the quantification of the irradiation incident on the rear side of the bifacial module. As a result, various optical models, such as those based on the approach of view factors (the average diffused masking angle) and ray tracing were developed to evaluate the irradiation received by the rear face of bifacial modules. In this study, a comparison between the obtained results from the different software tools (SAM …

Authors

Rania Benbba,Hicham Mastouri,Hassan Radoine,Philippe Drobinski,Jordi Badosa,Abdelkader Outzourhit

Published Date

2024/3/7

Biomass screening for syngas production by flash photopyrolysis

A few seconds flash photopyrolysis is used as efficient screening tool for the investigation of selected biomass in producing syngas, hydrogen and biochar. This innovative approach allowed rapid pyrolysis of the biomass, which was followed by a precise gas analysis and quantification, using Mass Spectrometry (MS). The analysis of the gas composition from three distinct biomass wastes in this study provides new insights into their thermochemical characteristics, expanding thus our knowledge of the potential of the selected biomass resources for the production of carbon, syngas, and/or hydrogen-rich gas production. This enhanced characterization revealed the potential of biomass transformation in contributing to innovative green energy sustainable solutions.

Authors

Abderrahman Mellalou,Wanderson O Silva,Mathieu Soutrenon,Hubert H Girault,Abdelkader Outzourhit,Jones Alami,Fouad Ghamouss

Journal

RSC advances

Published Date

2024

The Impact of Bio-Sourced Materials on the Building’s Energy Performance in a Semi-Arid Climate

The use of bio-sourced materials (construction materials derived from renewable resources such as plants, animals, or waste products) has become a trend toward sustainable building practices. Furthermore, in terms of sustainability, bio-sourced materials have been shown in various studies to be effective thermal insulators in a diverse selection of compositions. To get around this topic the paper aims to integrate 4 bio-sourced materials that are existing in the Moroccan continent (wood, reed, hemp, and Pennisetum setaceum fibers) into a residential building in a semi-arid climate and investigate their effects on building energy performance and indoor environment quality. The work is carried out using dynamic thermal simulation. The findings showed that incorporating hemp and Pennisetum setaceum fibers can help to reduce energy needs by 40% and 34%, respectively, when compared to the typical construction …

Authors

Yamna Soussi,Houda Er-Retby,Hicham Mastouri,Abdelkader Outzourhit,Hassan Radoine,Mohamed El Mankibi

Published Date

2024/3/7

Energy performance assessment of a novel enhanced solar thermal system with topology optimized latent heat thermal energy storage unit for domestic water heating

In this study, we introduce an innovative approach by incorporating a Topology-Optimized Latent Heat Thermal Energy Storage (TO-LHTES) unit with fins into a solar water heating system. Employing EnergyPlus software, we initially assess the energy and power requirements essential for meeting domestic hot water needs within the Moroccan context. Afterward, Computational Fluid Dynamics (CFD) analyses explore diverse Phase Change Materials (RT35, RT50, and RT60) under varying operational conditions, including injected temperature, velocity, and stored temperature. Our investigation extends to different climates, evaluating the energy savings potential. The study's outcomes reveal the remarkable efficacy of the enhanced solar system featuring the TO-LHTES unit, particularly with specific configurations—such as an injected temperature of 20 °C, injected velocity of 0.02 m/s, stored temperature of 80 …

Authors

Imad Ait Laasri,Mouatassim Charai,Mohamed Oualid Mghazli,Abdelkader Outzourhit

Journal

Renewable Energy

Published Date

2024/2/20

Copper oxide coatings deposited by reactive radio-frequency sputtering for solar absorber applications

Submicron copper oxide coatings were deposited on glass and copper substrates using reactive radio-frequency sputtering of a copper target in argon-oxygen atmospheres. Morphological, structural, and optical properties of the deposited films were examined using X-ray reflectometry and diffraction, optical transmission measurements, Fourier transform infrared spectroscopy, transmission electron microscopy, atomic force microscopy, electrical resistivity, and thermal emissivity measurements. The obtained coatings consist of a major phase of cupric oxide (Cu2O) at 10% oxygen, which transforms into monoclinic CuO through an intermediary tetragonal Cu4O3 phase for greater oxygen flow rates. The morphology of the Cu2O films is interpreted by an original fish-scale-like growth mode based on the nucleation of single crystallites at cluster boundaries of the underlying layer, which promotes the formation of …

Authors

Hind El Aakib,Nabil Rochdi,Abdelaziz Tchenka,Jean-François Pierson,Abdelkader Outzourhit

Journal

Materials Chemistry and Physics

Published Date

2023/2/15

Experimental investigations on drying kinetics and modeling of two-phase olive pomace dried in a hybrid solar greenhouse dryer

Olive pomace is generated during the production of olive oil. The disposal of olive pomace presents a serious environmental issue to the agricultural community in Morocco. Among all actions devoted to the reduction of olive pomace waste, their revaluation seems to be the most efficient and advantageous from both environmental and economic points of view. Due to its high moisture content, solar drying constitutes an important and promising solution for a possible bio-fuel conversion of olive pomace. For this purpose, a modified uneven-span greenhouse dryer was designed and installed at the faculty of sciences Semlalia, Marrakech, Morocco. An experimental study of solar drying kinetics of the olive pomace was conducted to test the performances of the modified greenhouse dryer under a hybrid (solar/hot air) forced convection mode. The hot-air blower was supplied by electricity from a PV array installed near …

Authors

Abderrahman Mellalou,Walid Riad,Abdelaziz Bacaoui,Abdelkader Outzourhit

Journal

Journal of Thermal Analysis and Calorimetry

Published Date

2023/6

Substitution effects on physical and chemical properties of Cu2Fe1-xCoxSnS4 thin films synthesized by the sol-gel technique

The impact of iron and cobalt substitution on the structural, morphological and optical properties of the copper iron cobalt tin sulfide Cu2Fe1-xCoxSnS4 thin films was studied. Employing the simple and easy sol-gel spin-coating technique on soda-lime glass substrates without sulfurization phase, Cu2Fe1-xCoxSnS4 (x = 0, 50 and 100%) compound was formed with the (112) preferential orientation for all thin films in the tetragonal stannite structure at space-group I42 m. By performing X-ray diffraction (XRD), Raman spectroscopy, Scanning Electron Microscopy, Energy Dispersive analysis and UV–Vis–NIR spectrophotometry, the physical and chemical properties were examined. The substitution was observed to provide a slight variation of the lattice parameters. The crystallite size was found to vary between 14 and 32 nm and decreased by increasing the cobalt content. The Raman spectra confirm the result of the …

Authors

S Drissi,A EL Kissani,A Abali,S Elmassi,L Amiri,L Nkhaili,K EL Assali,A Narjis,A Outzourhit

Journal

Physica B: Condensed Matter

Published Date

2023/10/15

Tuning Thermoelectric Properties of Spin-Coated Cu2SnS3 Thin Films by Annealing

Room-temperature thermoelectric (TE) properties of spin-coated copper tin sulfide (CTS) thin films were studied as a function of annealing temperature in the range 350–500°C. X-ray diffraction patterns revealed that the synthesized simples are for a pure CTS structure but only for an annealing temperature less that 450°C. Hall effect measurements showed a maximum of carrier concentration for the annealing at 400°C. This results in the maximum of electrical conductivity and maximum of mobility. TE measurements revealed that, with annealing, one can access band flattening, through the increase of the effective mass of the carrier. This is, however, challenged by the increase of carrier concentration and, consequently, results in a pronounced decrease in the Seebeck coefficient. The TE power factor was observed to be tunable by annealing. Nevertheless, CTS films remain to be doped for future investigations …

Authors

F Welatta,A El Kissani,A Mellalou,A Narjis,D Ait El Haj,A Tchenka,L Nkhaili,M Aggour,A Outzourhit

Journal

Journal of Electronic Materials

Published Date

2023/8

Enhanced stability and optoelectronic properties of double perovskite Cs2AgSbI6 by Br doping for solar cells

Lead halide perovskite photovoltaic cells offer much higher energy conversion efficiency. However, new non-toxic semiconductor compounds are being sought due to instability and lead toxicity. The stable double perovskite Cs2AgSbI6 is the base material for this investigation since it has been demonstrated to be an effective and ecologically replacement for lead halide perovskites. In this study, the cubic space phase of the bromine alloy double inorganic halide perovskite Cs2AgSb(I1−xBrx)6 was analyzed using density functional theory (DFT). The band gap was widened with increasing percentages of Br doping, and theoretical calculations were used to determine the best structures for these compounds. Theoretically, its optoelectronic characteristics are computed using the GGA-PBE and GGA-TB-mBJ approximations. We found that Cs2AgSb(I1−xBrx)6 is stable under typical conditions with a band gap below 2 …

Authors

F Elfatouaki,R Takassa,O Farkad,S Hassine,O Choukri,A El Mouncharih,EA Ibnouelghazi,A Outzourhit,D Abouelaoualim

Journal

Materials Today Sustainability

Published Date

2023/12/1

Sol-gel combined mechano-thermal synthesis of Y2O3, CeO2, and PdO partially coated ZnO for sulfamethazine and basic yellow 28 photodegradation under UV and visible light

The presence of organic pollutants in marine systems has made wastewater treatment extremely complicated, due to the release of a series of harmful contaminants into the ocean and causing direct damage to humans and the aquatic ecosystem. The present research aims to examine the impact of ZnO partial coating with different nonmetric layers based on CeO2, Y2O3, or PdO for water-charged organic contaminants treatment, using a photocatalysis process. In this vision, the photodegradation of two organic pollutants, sulfamethazine (SMZ) and basic yellow 28 (BY28), using ZnO and ZnO partially coated with cerium, yttrium or palladium oxides was studied. These materials have been successfully synthesized by the combination of both sol-gel and mechano-thermal methods. The prepared catalysts were characterized using X-ray diffraction, scanning electron microscopy SEM-EDX, UV diffuse reflectance …

Authors

Mohamed Belghiti,Lekbira El Mersly,Karim Tanji,Kaltoum Belkodia,Isam Lamsayety,Khalid Ouzaouit,Hakim Faqir,Intissar Benzakour,Salah Rafqah,Abdelkader Outzourhit

Journal

Optical Materials

Published Date

2023/2/1

Effect of anodization time on the morphological, structural, electrochemical, and photocatalytic properties of anodic TiO2 NTs

Titanium dioxide nanotubes (TiO2 NTs) were prepared by electrochemical anodizing of a pure titanium foil in glycerol-distilled water containing ammonium fluoride. The diameters and tube length of TiO2 NTs are controlled by tailoring of the anodization time. Synthesized NTs have been characterized by using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and electrochemical impedance spectroscopy (EIS). The results revealed that the internal diameters of NTs can be adjusted from 30 to 130 nm. The length of NTs became longer progressively to reach a maximum of about 3.32 μm after 90 min. XPS analysis shows that the oxidation state of titanium is +4, which confirms the formation of TiO2. XRD and Raman spectroscopy revealed that the TiO2 NTs are composed of a mixture of anatase and rutile phases. The Mott-Schottky analysis …

Authors

O Zakir,A Ait-Karra,R Idouhli,M Khadiri,B Dikici,A Aityoub,A Abouelfida,A Outzourhit

Journal

Journal of Solid State Chemistry

Published Date

2023/3/2

Evaluation of phase change materials for a light-weight building in Morocco: Effect of building's volume, window orientation & infiltration

In this study, we will model a light-weight building made of phase change materials (PCMs) to analyze the impact of the building volume, window orientation, and air infiltration on the PCM performance. This is done by calculating the energy savings attained by the use of PCM across all of Morocco. We'll use the commercial Rubitherm panels with RT28HC as a phase change material in this work. Typically, the EnergyPlus simulation engine is chosen to perform the modeling. The impact of building volumes is also evaluated on the PCM activation for light-weight square buildings with different side lengths of 10 m, 9 m, 8 m, and 7 m. Also, we looked at how well the PCM performed in terms of energy savings and thermal regulation at different window orientation placements (south, north, west, and east) and various air infiltration rates (0.5, 1, 1.5, and 3 ACH). This paper's primary objective is to determine the energy …

Authors

Imad Ait Laasri,Niima Es-Sakali,Abdelkader Outzourhit,Mohamed Oualid Mghazli

Journal

Energy and Built Environment

Published Date

2023/7/1

Investigation of the structural, optical and thermoelectric performances of flash-evaporated cobalt-doped copper sulfide thin films

In this study, we employed the flash evaporation method to deposit thin films of pure copper sulfide and cobalt-doped copper sulfide. We focused on evaluating the influence of cobalt content, ranging from zero to 9%, on the structural, optical, electrical, and thermoelectric characteristics of the synthesized thin films. Our findings indicate that the passage from the copper-rich (covellite phase to the digenite or djurleite phases) can be carried out by annealing or by doping. Raman's investigation supports the discovered phase and shows that the A1g(LO) mode intensity drops with doping. The gap energy was found to decrease by increasing the percentage of cobalt. The annealing at 350 °C resulted in good thermoelectric properties, while the dominance of the djurleite phase, resulted in the highest Seebeck coefficients.

Authors

L Amiri,A Narjis,M Bousseta,L Nkhaili,A Tchenka,S Elmassi,A Alsaad,Hind Albalawi,A Outzourhit

Journal

Physica B: Condensed Matter

Published Date

2023/12/1

Optimisation of the density of copper oxide nanowires synthesized by the electrochemical technique followed by annealing

In this work, copper oxide nanowires (CuO NWs) were synthesized on fluorine-doped tin oxide/glass substrates using the electrochemical technique followed by thermal oxidation in air atmosphere. In particular, we study the effect of the annealing time (4, 6, 8, 10 and 12 h) on CuO NWs properties. It was proved that the population density of CuO NWs decreased from 5.91 107 to 3.15 107 cm−2 as the annealing time increased from 4 to 12 h. The average diameter of CuO NWs increases from 69 to 114 nm for 4 to 10 h, and decreases to 100 nm for sample heated during 12 h. The EDS spectrum demonstrates that the CuO NWs are practically stoichiometric.

Authors

S Elmassi,E Ablouh,L Amiri,A Abali,S Drissi,A Tchenka,L Nkhaili,A Narjis,A El Kissani,A Outzourhit

Journal

Journal of the Korean Physical Society

Published Date

2023/9

Multi-parameter analysis of different building forms in a semi-arid climate: Effect of building construction and phase change materials

This paper presents a comparative study that will evaluate and optimize 96 building cases in a multi-parametric manner. This study is conducted by using the EnergyPlus simulation software with the integrated PCM hysteresis model. The studied building designs were carefully selected to have equivalent air volume, while taking into consideration the outer wall shape of the building to increase or decrease the outside sun and wind exposed surface as well as increasing the PCM area inside the buildings. Three different building forms were evaluated, the square form, the octagonal form which is considered as the building design with a reduced surface, and finally the innovative zigzag form which has a higher wall surface compared to the square form. Additionally, these three building forms, were evaluated at two different constructions (light-weight and heavy-weight), four different PCM types and four different …

Authors

Imad Ait Laasri,Abdelkader Outzourhit,Mohamed Oualid Mghazli

Journal

Solar Energy

Published Date

2023/1/15

Assessment of Bifacial Modules in an AgriVoltaic System Installed in Agadir, Morocco

In this chapter, we realize a comparative study between the use of bifacial modules and conventional monofacial modules in APV systems. To this aim, we carried out simulations using SAM and PVsyst software to evaluate the energetic and economic performances of an APV system installed in AGADIR, Morocco. This PV system has an installed capacity of 2.1 kW for bifacial and monofacial modules mounted on a Fixed Tilted (Optimal) and Fixed Vertical and Horizontal Axis Tracking (HSAT) structure. The structures are raised to a sufficient height above a wheat field, for which the estimated albedo variation is a function of their growing. Simulation results indicate that the fixed-tilt bifacial module produces an energy gain of about 6 and a 2% reduction in LCOE compared to monofacial modules. Similarly, a bifacial module with HSAT produces the best results. This system increases energy production by up to 20 …

Authors

Rania Benbba,Mohamed Akhsassi,Omar Ait Si Ahmed,Hasnae El Mouden,Ahmed Wifaya,Abdelkader Outzourhit

Published Date

2023/5/29

A review on TiO2 nanotubes: synthesis strategies, modifications, and applications

In the field of nanotechnology, titanium dioxide nanotubes (TiO2 NTs) are one of the most valued inventions. They were discovered in 1996, and have since been used in several fields including photocatalytic degradation of pollutants, hydrogen production, and dye-sensitized solar cells. This review provides a comprehensive overview of TiO2 NTs and their synthesis methods, highlighting recent progress and modifications that improve their properties. The influence of anodization parameters, the effect of annealing temperature, and modified TiO2 NT arrays, including doping and heterostructure were discussed also in detail. In addition, this article summarizes some of the recent advances in the applications of TiO2 nanotubes in photocatalysis, hydrogen production, dye-sensitized solar cells (DSSC), and the detection of heavy metal ions. Finally, the existing problems and further prospects of this renascent and …

Authors

O Zakir,A Ait-Karra,R Idouhli,M Khadiri,Burak Dikici,A Aityoub,A Abouelfida,A Outzourhit

Published Date

2023/6/2

Impact of the greenhouse drying modes of two-phase olive pomace on the energy, exergy, economic and environmental (4E) performance indicators

This research aims to valorize olive pomace waste as bio-combustible. Therefore, the drying of two-phase olive pomace in a solar greenhouse dryer was studied under the weather conditions of Marrakech, Morocco. The experimental results of natural, hybrid, and forced hybrid drying modes of two-phase olive pomace were used to determine the energy and exergy efficiencies of the greenhouse dryer and to analyze the kinetics of drying. Moreover, the economic viability and environmental suitability of the three drying modes were also investigated. The results indicated that the humidity level of the product dropped from 54% to 4% (wt%) in 28, 19 and 14 h for the natural, hybrid, and hybrid forced drying modes, respectively. The effective moisture diffusivity varied significantly between the drying modes with a lowest average value of 1.28 × 10−09 m2/s and a highest average value of 2.71 × 10−09 m2/s associated to …

Authors

Abderrahman Mellalou,Walid Riad,Abdelaziz Bacaoui,Abdelkader Outzourhit

Journal

Renewable Energy

Published Date

2023/7/1

Numerical modeling of urban heat island effects phenomena: A case study of the green city of Ben Guerir Morocco

A better understanding of the urban heat island (UHI) effect has heightened interest in measuring, assessing, and modeling the outdoor thermal environment in urban areas around the world. Its modeling is currently becoming crucial for urban planning and design which facilitates the analysis of the phenomena. To get around this topic, this paper investigates the heat profile in a new urban area located in a vast semi-desert region characterized by a hot Mediterranean climate and how green spaces affect the outdoor thermal environment. In this work, we used two approaches: first, we created an urban weather generator workflow using the visual programming software Grasshopper to estimate a city’s thermal conditions using many key geometric and material parameters of the urban landscape, such as buildings height, albedo, surface properties (roads, roofs, and walls), and heat traffics; after that the obtained …

Authors

Houda Er-Retby,Abdelkader Outzourhit,Mohamed Oualid Mghazli,Abdellah Nait-Taour,Hicham Mastouri,Mohamed El Mankibi

Journal

AIP Conference Proceedings

Published Date

2023/11/8

Investigation of the Effect of Vacuum and Air Annealing on the Structural, Optical and Electrical Properties of Radio Frequency Sputtered WO3 Thin Films

Thin films of tungsten oxide were deposited on glass substrates by the radio frequency (RF) reactive sputtering from a high purity tungsten metal target (99.9%) with a diameter of 10 cm. The reactive sputtering was carried out in an argon-oxygen gas mixture containing 20% of O 2 and 80% of Ar. The used RF power is 200 W while fixing the deposition time at 120 min. Finally, the prepared films were annealed at different temperatures (350 C, 400 C, 450 C, 500 C and 550 C) for 1 hour under air and under vacuum. X-ray diffractograms showed that the deposited thin films crystallized in Hexagonal/Monoclinic WO 3 phase. It was found that the crystallite size varies with the annealing temperature and the lattice parameters is a= 7.3064 Å, b= 7.5292 Å, c= 7.6875 Å and a= b= 7.3242 Å, c= 7.6624 Å, for h-WO 3 and m-WO 3 structures, respectively. Scanning Electron Microscopy (SEM), Raman spectra confirmed …

Authors

Mohammed Bousseta,Said Elmassi,Abdelaziz Tchenka,Lahocine Amiri,Kassem El Assali,Abdelfattah Narjis,Abdelkader El Kissani,Lahcen Nkhaili,Abdelkader Outzourhit

Journal

Journal of Nano Research

Published Date

2023

The combination of vermicompost and arbuscular mycorrhizal fungi improves the physiological properties and chemical composition of Opuntia ficus-indica under …

Drought is one of the major threats to food security in arid and semi-arid regions. Therefore, significant changes in agricultural production systems will be required to meet the challenges of food security while addressing water scarcity. Prickly pear is a drought tolerant plant, as well as a source of sustainable food and feed. Nonetheless, in dry conditions, its growth and performance are restricted. The aim of this study was to evaluate the effect of arbuscular mycorrhizal fungi (AMF), vermicompost (Vc) or the combination of AMF + Vc on yield, growth and physio-chemical parameters of cactus grown under field drought conditions. Two irrigation regimes were applied, non-irrigated (grown under rainfed conditions) and irrigated plants (8 mm of water per week). After eight months of cultivation, the finding demonstrated that drought reduced growth, physiological and biochemical parameters of cactus. However, the …

Authors

Soufiane Lahbouki,Raja Ben-Laouane,Abdelkader Outzourhit,Abdelilah Meddich

Journal

Arid Land Research and Management

Published Date

2023/4/3

Theoretical and experimental investigations of the effect of cobalt doping on the structural, optical and electrical properties of sputtered NiO films for optoelectronic …

Theoretical and Experimental Investigations of the Hock rearrangement with InCl3 as catalyst - Archive ouverte HAL Accéder directement au contenu Documentation FR Français (FR) Anglais (EN) Se connecter HAL science ouverte Recherche Loading... Recherche avancée Information de documents Titres Titres Sous-titre Titre de l'ouvrage Titre du volume (Série) Champ de recherche par défaut (multicritères) + texte intégral des PDF Résumé Texte intégral indexé des documents PDF Mots-clés Type de document Sous-type de document Tous les identifiants du document Identifiant HAL du dépôt Langue du document (texte) Pays (Texte) Ville À paraître (true ou false) Ajouter Auteur Auteur (multicritères) Auteur (multicritères) Auteur : Nom complet Auteur : Nom de famille Auteur : Prénom Auteur : Complément de nom, deuxième prénom Auteur : Organisme payeur Auteur : IdHal (chaîne de caractères) Auteur : …

Authors

Agathe Fayet,Alexandra E Bosnidou,Gilles Frison,Bastien Nay

Published Date

2022/11/2

Experimental investigation of the impact of conducting polymer interlayer and iodine doping on the electronic properties of hybrid solar cells based on alkylated sexithiophene …

The influence of poly(o-toluidine) (POT) interlayer as a hole transporting layer (HTL) and iodine doping on electrical properties of hybrid solar cells based on a mixture of didecyl-sexithiophène (2D6T) and nanostructured zinc oxide as blend donor/acceptor-active layer have been investigated. The sexithiophene 2D6T was synthesized by a chemical route through the oxidative coupling of the corresponding terthiophene derivatives, and the nanostructured ZnO powders were prepared by a one-pot solution route at ambient conditions. A series of ITO/(2D6T: nanostructured ZnO)/Al solar cells with and without POT interlayer were fabricated by successive deposition using the spin coating technic, and they are completed by thermal evaporation of aluminium circular contacts on the active layer. The non-linear dark current–voltage I(V) characteristics of these devices indicate a rectifying behaviour. The diode parameters …

Authors

H Jebari,A El Mansouri,N Hadik,N Tahiri,O El Bounagui,A El kissani,H Ez-Zahraouy,A Outzourhit

Journal

Bulletin of Materials Science

Published Date

2023/8/7

Effect of RF power on structural, optical and electrical properties of sputtered nickel oxide

In this study, we focus on the effect of the radio frequency (RF) sputtering power on the structural, optical and electrical properties of NiO thin films, deposited on glass substrates in the O2/Ar atmosphere. It was observed that by increasing the RF power from 50 to 300 W, the crystallite size increases from 5.5 to 8.28 nm then decreases for 350 W. The thickness increases from 40 to 800 nm as the power increases from 50 W to 300 W, and decreases to 450 nm for 350 W. Raman spectroscopy analyses confirmed the formation of the NiO phase for all RF powers. SEM images exhibited homogenous and no porous surfaces. Besides, the optical transmittance decreases with increasing the RF power, the band gap is in the range 2.68–3.15 eV and the Urbach energy decreases from 8.06 to 2.04 eV with a minimum obtained for 250 W. The minimum electrical resistivity was obtained for the RF power 50 W.

Authors

S Elmassi,M Bousseta,L Amiri,S Drissi,A Abali,L Nkhaili,A Narjis,A Ammar,A Outzourhit

Journal

Physica B: Condensed Matter

Published Date

2023/6/15

Investigation of the appropriate phase change temperatures for an enhanced passive indoor thermal regulation in a semi-arid climate: Tunable PCM case

Researchers in the building industry are becoming increasingly interested in phase change materials (PCM). As these PCMs might provide passive temperature adjustment, this will aid in lowering the energy consumption of Heating, Ventilation, and Air-Conditioning (HVAC) devices. To prevent leakage during phase change, an enclosure is needed when installing PCMs in buildings. The need to assess the passive thermal regulation of the PCMs at different melting temperature is necessary, so that we can get a sense of how much energy will be saved for this passive thermal regulation method. Hence, this paper will evaluate and identify the optimum phase change transition temperatures during the whole year for wall composition with tunable PCM in a semi-arid climate. Thus, the main objective of this study is to assess the indoor air temperature fluctuation reduction and the PCM activation while suggesting an …

Authors

Imad Ait Laasri,Niima Es-sakali,Abdelkader Outzourhit,Mohamed Oualid Mghazli

Journal

E3S Web of Conferences

Published Date

2023

Opuntia spp.: An Overview of the Bioactive Profile and Food Applications of This Versatile Crop Adapted to Arid Lands

Opuntia spp. are crops well adapted to adverse environments and have great economic potential. Their constituents, including fruits, cladodes, and flowers, have a high nutritional value and are rich in value-added compounds. Cladodes have an appreciable content in dietary fiber, as well as bioactive compounds such as kaempferol, quercetin, and isorhamnetin. Fruits are a major source of bioactive compounds such as phenolic acids and vitamin C. The seeds are mainly composed of unsaturated fatty acids and vitamin E. The flowers are also rich in phenolic compounds. Therefore, in addition to their traditional uses, the different plant fractions can be processed to meet multiple applications in the food industry. Several bakery products have been developed with the incorporation of cladode flour. Pectin and mucilage obtained from cladodes can act as edible films and coatings. Fruits, fruit extracts, and fruit by-products have been mixed into food products, increasing their antioxidant capacity and extending their shelf life. Betalains, obtained from fruits, can be used as food colorants and demonstrate promising applications as a sensor in food packaging. This work reviews the most valuable components of the different fractions of this plant and emphasizes its most recent food applications, demonstrating its outstanding value.

Authors

Carolina Rodrigues,Camila Damásio de Paula,Soufiane Lahbouki,Abdelilah Meddich,Abdelkader Outzourhit,Mohamed Rashad,Luigi Pari,Isabel Coelhoso,Ana Luísa Fernando,Victor GL Souza

Published Date

2023/3/29

Investigation of the impact of phase change materials at different building envelope placements in a semi-arid climate

Researchers in the building industry are becoming increasingly interested in phase change materials (PCM). Due to the potential for passive temperature management offered by these PCMs, HVAC (Heating, Ventilation, and Air-Conditioning) equipment will use less energy. Still, to prevent leakage during phase change, an enclosure is needed when installing PCMs in buildings. So, to determine this passive indoor temperature regulation cost, payback period, and energy savings, it is crucial to assess the PCM energy savings in various building envelope placements. So, this is done by using the EnergyPlus simulation engine for the case of the commercial PCM RT 28HC, this article will assess and compare 8 potential building envelope positions in a semi-arid region. These eight different building configurations have one case without PCM and the other cases have PCM placed in the interior surface of the …

Authors

Imad Ait Laasri,Niima Es-Sakali,Abdelkader Outzourhit,Mohamed Oualid Mghazli

Journal

Materials Today: Proceedings

Published Date

2023/6/12

Optoelectronic and thermoelectric properties of double halide perovskite Cs2AgBiI6 for renewable energy devices

Density function theory-based calculations investigate the structural, electronic, optical, and thermoelectric properties of bismuth-based double halide perovskite Cs 2 AgBiI 6 for renewable energy devices. Our calculations show that these perovskite materials have good structural stability with a tolerance factor of t= 0. 846 and formation energy of E f=− 0. 88 eV. The electronic properties are approximated using GGA-PBE and TB-mBJ while adding spin–orbit coupling. The compound exhibits indirect band gap semiconductor behavior with good absorption in the visible (60× 1 0 4 cm− 1 at 4 eV) and ultraviolet regions (160× 1 0 4 cm− 1 at 11.5 eV). Therefore, the compound is a good candidate for solar cells. In addition, the thermoelectric properties in the temperature range of [100–800 K] were studied using the BoltzTraP code. The studied thermoelectric properties of Cs 2 AgBiI 6 double halide perovskite prove that it …

Authors

F Elfatouaki,O Farkad,R Takassa,S Hassine,O Choukri,A Ouahdani,EA Ibnouelghazi,D Abouelaoualim,A Outzourhit

Journal

Solar Energy

Published Date

2023/8/1

Building energy model automated calibration using Pymoo

This paper describes a two-stage calibration method, starting with detailed modeling and followed by optimization-based calibration. To put the proposed calibration method to the test, a real-life existing building was modeled using TRNSYS (Transient System Simulation Tool). The first stage approach emphasizes the significance of a detailed description of the building. In this regard, we compared the results of two different simulations: one that considers the dynamic behavior of infiltration and convective heat exchange, and the other that uses average values for the aforementioned quantities. The detailed model helped reduce the gap between simulation and measurement, where one of the simulated zones' mean absolute error (MAE) decreased from 1.11 °C to 0.63 °C. The calibration problem is viewed as an optimization problem in the second-stage approach, and the MAE between the simulated and …

Authors

Abdelkader El Kounni,Abdelkader Outzourhit,Hicham Mastouri,Hassan Radoine

Journal

Energy and Buildings

Published Date

2023/11/1

Effects of Humic Substances and Mycorrhizal Fungi on Drought-Stressed Cactus: Focus on Growth, Physiology, and Biochemistry

Utilizing water resources rationally has become critical due to the expected increase in water scarcity. Cacti are capable of surviving with minimal water requirements and in poor soils. Despite being highly drought-resistant, cacti still faces limitations in realizing its full potential under drought-stress conditions. To this end, we investigated the interactive effect of humic substances (Hs) and arbuscular mycorrhizal fungi (AMF) on cactus plants under drought stress. In the study, a cactus pot experiment had three irrigation levels (W1: no irrigation, W2: 15% of field capacity, and W3: 30% of field capacity) and two biostimulants (Hs soil amendment and AMF inoculation), applied alone or combined. The findings show that the W1 and W2 regimes affected cactus performance. However, Hs and/or AMF significantly improved growth. Our results revealed that drought increased the generation of reactive oxygen species. However, Hs and/or AMF application improved nutrient uptake and increased anthocyanin content and free amino acids. Furthermore, the soil’s organic matter, phosphorus, nitrogen, and potassium contents were improved by the application of these biostimulants. Altogether, using Hs alone or in combination with AMF can be an effective and sustainable approach to enhance the tolerance of cactus plants to drought conditions, while also improving the soil quality.

Authors

Soufiane Lahbouki,Ana Luísa Fernando,Carolina Rodrigues,Raja Ben-Laouane,Mohamed Ait-El-Mokhtar,Abdelkader Outzourhit,Abdelilah Meddich

Journal

Plants

Published Date

2023/12/14

Structure, electrical, and dielectric properties of Ba1−xYxTi(1−x/4)O3 ceramics sintering at low temperature

The sintering temperature of BaTiO3, prepared by solid-state reaction route, is in general considerably above 1250 °C to obtain dense ceramic. In this regard, we investigate the effect of low sintering temperature on the electrical and dielectric properties of lead-free of Ba1−xYxTi(1−x/4)O3 (x = 0 and 0.02) ceramics. These structures' tetragonality was identified using powder X-ray diffraction and Raman analysis. BaTiO3 has a uniform grain size, but the doped sample consists of a different shape and size with homogeneous morphology and dense microstructure, as observed by scanning electron microscopy. Through dielectric measurements, the Y-doped BT ceramic has a higher Curie temperature (TC) and dielectric constant (126 °C and 6999) at 5 kHz, which explains a dense microstructure. Besides, the dielectric loss was less than 10–1 in the entire temperature range from room temperature to 200 °C. The …

Authors

Zineb Gargar,Abdelouahad Zegzouti,Mohamed Elaatmani,Amina Tachafine,Didier Fasquelle,Abdelkader Outzourhit,Mohamed Daoud,Mohamed Afqir

Journal

Journal of the Korean Ceramic Society

Published Date

2023/1

Effect of annealing time on different properties of the next generation Cu2Ni0. 50Co0. 50SnS4Thin films

In this report, the Multifunctional Quinary Cu2Ni0.50Co0.50SnS4 synthesized by a cheap and easy-to-use technique using spin-coating on glass substrates. XRD spectra of Cu2Ni0.50Co0.50SnS4 annealing at 300 °C demonstrated the structure similar to that of Cu2NiSnS4 and Cu2CoSnS4 for 60 min and 90 min. The Raman scattering demonstrated the existence of Raman Cu2Ni0.50Co0.50SnS4 peaks positioned at 286 and 331 cm−1 which allows us to tell the structure of Cu2Ni0.50Co0.50SnS4 similar only to Cu2NiSnS4. The EDS studies demonstrated a quasi-stoichiometry of the Cu2Ni0.50Co0.50SnS4 annealed sample with a low effect of annealing time on stoichiometry. The scanning electron microscope showed nearly uniform, dense and rough surface morphology with some voids. UV-visible-NIR spectroscopy revealed the gap energy of Cu2Ni0.50Co0.50SnS4 absorbent layers annealed at 300 °C …

Authors

Abdelaziz Abali,Safia Drissi,Said Elmassi,Lhocin Amiri,Lahcen Nkhaili,Kassem El Assali,Abdelkader Outzourhit

Journal

The European Physical Journal Applied Physics

Published Date

2022

Arbuscular mycorrhizal fungi and/or organic amendment enhance the tolerance of prickly pear (Opuntia ficus-indica) under drought stress

Drought stress is one of the most serious constraints that prevents plants from attaining their full potential, particularly in arid and semi-arid regions. Among notable drought-tolerant plants, prickly pear stands as a plant capable of tolerating daring water stress conditions, thanks to its water storage and CO2 uptake capabilities. However, its full potential remains constrained under drought stress. The use of biostimulants such as arbuscular mycorrhizal fungi (AMF) and vermicompost (Vc) can help the plant to mitigate drought. The present study provides insights into the effects of an AMF, a vermicompost at a dose of 5%, and their combination on growth, and biochemical responses of prickly pear cladodes under severe water stress (SWD), moderately watered (MD), and well-watered (WW) treatments (15, 30 and 50% of field capacity (FC), respectively). AMF + Vc treatment showed the highest values of AMF …

Authors

Soufiane Lahbouki,Raja Ben-Laouane,Mohamed Anli,Abderrahim Boutasknit,Youssef Ait-Rahou,Mohamed Ait-El-Mokhtar,Soumaya El Gabardi,Allal Douira,Said Wahbi,Abdelkader Outzourhit,Abdelilah Meddich

Journal

Journal of Arid Environments

Published Date

2022/4/1

Influence of RF-power on the optical, structural, and morphological properties of ZnS: Cr thin films

In this work, the morphological, optical, and structural properties of ZnS:Cr films deposited by RF-sputtering are examined for different RF-powers. For this, thin films (ZnS) and (ZnS:Cr) were deposited on glass and Si substrates. The deposition time was set at 90 min, and the RF power varied in the range of 100–200 W. X-ray indicated that all the ZnS films were single-phase with apreferred growth orientation along the (111) plane of the (ZB) phase. The Cr-doped ZnS, and showed the (111) (2 20) and (311) peaks of the same phase. The ZnS films showed acrystallite size of 25.45 nm for RF power of 200 W. While in the case of ZnS:Cr, the crystallite size increased from 16.6 nm to 28.5 nm. The strain was shown to decrease from 2.2 × 10−3 to 1.45 × 10−3. SEM observations revealed smooth film surfaces. (EDS) revealed that the Cr rate is smaller than the Zn and Srates. UV- measurements revealed that the ZnS films …

Authors

CM Samba Vall,M Chaik,H El Hind,H Ait Dadis,A Agdad,CSE Kane,M Aggour,A Outzourhit

Journal

Advances in Materials and Processing Technologies

Published Date

2022/7/3

Anodic TiO2 nanotube: influence of annealing temperature on the photocatalytic degradation of carbamazepine

The effect of annealing temperature on the morphology, structure, and photocatalytic response of TiO2 nanotubular prepared by anodization of a pure titanium foil was investigated. The anodization was carried out in a glycerol/H2O/NH4F electrolyte at room temperature, with two-electrode configurations. The morphology and structure of the nanotubes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that the annealing temperature affects strongly the morphology, the crystallinity, and the phase composition of the TiO2 nanotubes. The as-anodized TiO2 nanotube layers present an amorphous structure and the crystallization to the anatase phase begins at 400 °C. In addition, the rutile phase was observed at 600 °C. Of the anatase phase, 83.3% is transformed into rutile when annealing temperature increases from 400 to 700 °C. It is …

Authors

Othmane Zakir,El Mountassir El Mouchtari,Mesbah Elyaagoubi,El mersly Lekbira,Rachid Idouhli,Abdelaaziz Aityoub,Mohy Eddine Khadiri,Salah Rafqah,Abdesselam Abouelfida,Abdelkader Outzourhit

Journal

Journal of the Australian Ceramic Society

Published Date

2022/9

Structural, optical and electrical properties of Cu2CoSnS4 thin film solar cells prepared by facile sol-gel route

In the present investigation, pure MnO2 and Cu doped MnO2 (Cu:MnO2) thin films were successfully prepared by the spray pyrolysis deposition technique. Different Cu concentrations were used to analyze the morphological, structural, optical, electrical properties and as well glucose sensitivity measurement has been performed. MnO2 doped with Cu induces microstructure and is set in the lattice by keeping Mn+2 leading to the micro spherical shape of the samples highlighted from a scanning electron microscope. X-ray diffraction analysis has confirmed the tetragonal MnO2 crystal structure with α-phase. The crystallite size, crystal structure, texture, and nanoparticle formation in MnO2 films have been influenced by Cu dopant. The maximum optical transmittance is found to be about 83%. The energy band gap associated with the allowed direct transition is found to increase from 3.82 to 3.96 eV with …

Authors

Muslima Zahan,Jiban Podder

Journal

SN Applied Sciences

Published Date

2020/3

Numerical building energy simulation with phase change materials including hysteresis effect for different square building cases in a semi-arid climate

Phase change materials (PCM) have captured the interest of researchers in the building sector. As these PCMs could provide a passive temperature regulation, which will help in reducing the energy consumption of Heating, Ventilation and Air-Conditioning (HVAC) units. The implementation of PCMs in buildings requires an encapsulation to ensure no leakage occurs during phase change. The need to assess the energy savings of the PCMs at different building volumes is necessary, so that we can have an idea about the energy savings, cost and payback period of this passive thermal regulation solution. Hence, this paper will evaluate and compare 4 different building volumes in a semi-arid climate with the use of the EnergyPlus simulation engine for the commercial PCM RT 28. These four different building volumes are the following, a 10 m x 10 m, 9 m x 9 m, 8 m x 8 m and 7 m x 7 m square building with a …

Authors

Imad Ait Laasri,Niima Es-sakali,Abdelkader Outzourhit,Mohamed Oualid Mghazli

Published Date

2022/12/13

Micro-Fotoluminiscencia para el análisis de los procesos de degradación en perovskitas híbridas (MAPbI3) para uso en células solares

Las perovskitas híbridas de haluro de plomo son cada día más estudiadas por su importante potencial en el ámbito de la tecnología fotovoltaica. Mediante un análisis por micro-fotoluminiscencia se ha estudiado la influencia de los procesos de síntesis de este tipo de perovskitas (MAPbI3) en los posteriores mecanismos de degradación, los cuales se desencadenan al exponerlas a condiciones ambientales. La señal de fotoluminiscencia y un análisis visual de las muestras, han dejado en evidencia la importancia y los beneficios de aplicar un segundo tratamiento de envejecimiento a las muestras tras ser sintetizadas, ya que los resultados muestran una clara degradación en aquellas que no recibieron este segundo tratamiento. Por el contrario, las muestras que sí que fueron tratadas, presentan un nivel menos avanzado de deterioro.

Authors

Irene Mediavilla Martínez,Walid Riad,Cristian Terrados López,Abdelkader Outzourhit,Miguel Ángel González Rebollo,Jorge Serrano,Juan Ignacio Jiménez López

Published Date

2022

Synthesis and characterization of Y2O3 partially coated ZnO for highly efficient photocatalytic degradation of sulfamethazine

The objective of the study was to investigate the effect of ZnO powder partially coated with a nanometric layer of Y2O3 on the treatment of water contaminated with organic pollutants. In this approach, we successfully synthesized Y2O3-coated ZnO, and tested it on the degradation of sulfamethazine antibiotic (SMZ) under UV-visible irradiation.The prepared samples were characterized by TG-DTA analysis, X-ray diffraction with Rietveld refinement, and scanning electron microscope coupled with EDX analysis. The XRD measurement revealed that all prepared photocatalysts have a hexagonal ZnO structure, the average particle size is about 37 nm. The EDX analysis confirmed yttrium presence in the prepared materials with very good dispersion and homogeneity.The results prove that the partial coating with Y2O3 enhances the photocatalytic activity of ZnO, with almost complete degradation of SMZ whatever the pH …

Authors

Mohamed Belghiti,Lekbira EL Mersly,Salah Rafqah,Khalid Ouzaouit,Hakim Faqir,Intissar Benzakour,Amane Oueriagli,Abdelkader Outzourhit

Journal

Journal of Molecular Structure

Published Date

2022/3/5

Coupled parameters evaluation of three different finned structures for concentrated solar thermal energy storage

The main objective of this study is to improve the heat transfer of three cylindrical shell and tube exchangers including a novel honeycomb based finned structure, which is then compared to other finned structures (circular and longitudinal) for different thicknesses. This comparison is important in order to evaluate the honeycomb finned structure, however, to provide a reasonable comparison the PCM volume was kept constant for the three finned geometries compared at each thickness. For this reason, a 3D numerical model is performed using the COMSOL Multiphysics software, which is based on the FEM. Sodium Nitrite/Nitrate (NaNO2-NaNO3) is used as PCM and DelcoTerm is used as heat transfer fluid (HTF). The effect of thickness and number of fins for the three geometries was studied. However, most studies neglect the impact of the PCM volume, thus the methodology adopted in this work includes a coupled …

Authors

Zakaria Elmaazouzi,Imad Ait Laasri,Ayoub Gounni,Mustapha El Alami,Abdelkader Outzourhit

Journal

Journal of Energy Storage

Published Date

2022/7/1

Effect of annealing on structural, optical and electrical properties of nickel oxide thin films synthesized by the reactive radio frequency sputtering

Ge thin films with a thickness of about 110nm have been deposited by electron beam evaporation of 99.999% pure Ge powder and annealed in air at 100–500°C for 2h. Their optical, electrical and structural properties were studied as a function of annealing temperature. The films are amorphous below an annealing temperature of 400°C as confirmed by XRD, FESEM and AFM. The films annealed at 400 and 450°C exhibit X-ray diffraction pattern of Ge with cubic-F structure. The Raman spectrum of the as-deposited film exhibits peak at 298cm−1, which is left-shifted as compared to that for bulk Ge (i.e. 302cm−1), indicating nanostructure and quantum confinement in the as-deposited film. The Raman peak shifts further towards lower wavenumbers with annealing temperature. Optical band gap energy of amorphous Ge films changes from 1.1eV with a substantial increase to ∼1.35eV on crystallization at 400 and …

Authors

Abdul Faheem Khan,Mazhar Mehmood,Anwar M Rana,Taj Muhammad

Journal

Applied Surface Science

Published Date

2010/1/15

Rare Earth Effect on Dielectric Properties of Ba0.98L0.02Ti0.995O3 (L = Nd, Ce, and Y) Synthesized by the Solid-State Process

Lead–free Ba0.98L0.02Ti0.995O3 (L = Nd, Ce, and Y) ceramics were synthesized via a solid-state reaction technique at room temperature. XRD technique was used to identify the crystal structure and to demonstrate the phase purity. SEMScanning Electron Microscopy (SEM) observations have shown homogeneous morphologies for all samples. Dielectric measurements were investigated for a range of frequency of (103–105 Hz) and temperature (25–200 °C). The Ba0.98L0.02Ti0.995O3 (L = Nd, Ce, and Y) dielectric permittivity shows stability in the frequency range from 103 to 105 Hz with a dense microstructure and lower dielectric loss at room temperature (tan (δ) < 10–1).

Authors

Zineb Gargar,Amina Tachafine,Didier Fasquelle,Abdelouahad Zegzouti,Mohamed Elaatmani,Mohamed Daoud,Mohamed Afqir,Abdelkader Outzourhit

Published Date

2022/9/26

Streptomyces thinghirensis sp. nov. as a promising path for green synthesis of silver nanoparticles: High eradication of multidrug-resistant bacteria and catalytic activity

Biological and non-biological pollutants are posing a major health and environmental threat worldwide. For this reason, we reported on the synthesis and investigations of the silver nanoparticle (ST-AgNPs), using Streptomyces thinghirensis sp. (ST) as an original Streptomyces species deposited in GenBank under the accession number DSM 41919 T. Various techniques such as UV-Vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, particle-size analyzer, scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM) for the characterization of the structure and morphology of biosynthesized ST-AgNPs, thereby, the evaluation of their catalyst and antimicrobial behaviors. ST-AgNPs nanoparticles are spherical, crystallizing with a size ranging from 10 to 30 nm, and are stable (−27.2 mV). They were able to reduce 4-nitrophenol to 4-aminophenol within 15 min …

Authors

Amal Loqman,Abdelkrim Outammassine,Oumaima El Garraoui,Brahim El Bali,Yedir Ouhdouch,Abdelkader Outzourhit,Souad Loqman

Journal

Journal of Environmental Chemical Engineering

Published Date

2022/12/1

Dyes depollution of water using PdO-ZnO photocatalysts

The objective of the study was to investigate the effect of ZnO powder partially coated with a nanometric layer of PdO on the treatment of water contaminated with dyes. In this approach, we successfully synthesized PdO coated ZnO, and tested it on the degradation of basic yellow 28 and malachite, under UV-visible irradiation. The prepared samples were characterized by TG-DTA analysis, X-ray diffraction with Rietveld refinement, and scanning electron microscope coupled with EDX analysis. The XRD measurement revealed that all prepared photocatalysts have a hexagonal ZnO structure, the average particle size is about 32 nm. The EDX analysis confirmed palladium presence in the prepared materials with very good dispersion and homogeneity. The results prove that the partial coating with PdO enhances the photocatalytic activity of ZnO, with almost complete degradation of dyes after 2 h of irradiation. The …

Authors

Mohamed Belghiti,Abdelkader Outzourhit

Published Date

2022

Fabrication and characterization of ITO/ZnO/anthraquinone solid dye-sensitized solar cells

The use of natural dyes as sensitizers in organic solar cells is getting more interest due to its green nature, nontoxicity, low cost and ecofriendly materials. In this paper, two anthraquinone/zinc oxide-based dye-sensitized solar cells (DSSCs) were prepared by a simple and low cost method. The anthraquinone was extracted from Aloe-vera plant and was deposited as a thin film to study its structural and optical properties. ZnO nanoparticles and nanorods were prepared by the RF sputtering and electrodeposition methods, respectively. The Glass/ITO/ZnO/anthraquinone/Al structure exhibited a promising photovoltaic activity.

Authors

L Nkhaili,A El Kissani,C-T Liang,C Naceur Abouloula,SK Hnawi,M Ait Ali,A Narjis,A Outzourhit

Journal

The European Physical Journal Applied Physics

Published Date

2022

Electronic and optical properties of CsGeX2M (X, M= Br, Cl, I) perovskites for solar cell applications: First-principles study using PBE and TB-mBJ potentials

The effect of mixed halogen composition on the structural, electronic, and optical properties of CsGeX 2 M (X, M= Cl, Br, I) has been studied using density functional theory, generalized gradient approximation, and modified Becke–Johnson exchange potential (TB-mBJ). The electronic properties show that all structures are direct semiconductors with wide band gaps between 1.251 eV and 1.655 eV. In addition, the band gap values of these materials are tuned by decreasing the number of chlorine or bromine atoms. PDOS analysis of CsGeX 2 M compounds shows that the Cs atom has negligible effects on the electronic bands of these perovskites. The major contribution to the electronic bands of these compounds close to E f comes from the Ge orbitals and I, Br, and Cl. Optical properties show that these materials have good absorption capacity. The photon absorption coefficient along the z-axis in the visible light …

Authors

F Elfatouaki,O Farkad,EA Ibnouelghazi,D Abouelaoualim,A Outzourhit

Journal

Materials Science in Semiconductor Processing

Published Date

2022/6/1

Investigation of different topology-optimized fin structures in a cylindrical latent heat thermal energy storage unit

Latent heat thermal energy storage (LHTES) has received great attention from many researchers due to the high energy density of phase change materials (PCM), which helps to store more energy while allowing for a compact storage volume. However, most of these PCMs have low thermal conductivity, which requires enhancement techniques to efficiently distribute and store heat inside the LHTES unit. Therefore, different structures of finned heat exchangers have been investigated in the literature. Still, most of these structures are intuitive designs, which makes the literature very lacking in terms of non-intuitive heat exchanger designs for LHTES units. In this paper, we will use topology optimization to efficiently distribute the fins in the PCM domain. Afterwards, we will examine numerically the performance of different topology optimized fin designs, that were obtained through radial topology optimization and a …

Authors

Imad Ait Laasri,Zakaria Elmaazouzi,Abdelkader Outzourhit,Mohamed Oualid Mghazli

Journal

Thermal Science and Engineering Progress

Published Date

2022/8/1

Rare Earth Effect on Dielectric Properties Nd, Ce, and of Y) Ba Synthesized 0.98 (L= L0. 02 Ti0. 995O3 by the Solid-State Process

Abstract Lead–free Ba0. 98 (L= Nd, Ce, and Y) ceramics were synthesized via a solid-state reaction technique at room temperature. XRD technique was used to identify the crystal structure and to demonstrate the phase purity. SEM observations have shown homogeneous morphologies for all samples. Dielectric measurements were investigated for a range of frequency of (103–105 Hz) and temperature (25–200 C). The Ba0. 98 L0. 02 Ti0. 995O3 (L= Nd, Ce, and Y) dielectric permittivity shows stability in the frequency range from 103 to 105 Hz with a dense microstructure and lower dielectric loss at room temperature (tan (δ)< 10–1).

Authors

Zineb Gargar,Amina Tachafine,Didier Fasquelle,Abdelouahad Zegzouti,Mohamed Elaatmani,Mohamed Daoud,Mohamed Afqir,Abdelkader Outzourhit

Journal

Proceedings of the Sixth International Symposium on Dielectric Materials and Applications (ISyDMA’6)

Published Date

2022/9/25

Spectroscopic study and thermoelectric properties of copper sulfide thin films prepared by the flash evaporation method

Different phases of copper sulfide were synthesized by the Flash Evaporation method, followed by annealing at various temperatures. Pure and mixed crystal structures of the covellite, digenite and djurleite phases were identified by the X-ray diffraction patterns and Raman spectroscopy. Scanning Electron Microscopy revealed the effect of annealing on the surface morphology. The carrier concentration was found to decrease with increasing the annealing temperature due to the disappearance of copper vacancies. This results in an increase in the Seebeck coefficient and a decrease in the electrical conductivity. The thermoelectric power factor is better when the digenite phase dominates and doping may be a possible solution towards the integration of this material in the thermoelectric technology. Finally, annealing provided access to the Density Of States engineering, which is useful for future investigations.

Authors

L Amiri,Abdelfattah Narjis,L Nkhaili,M Bousseta,S Elmassi,A Tchenka,Safia Drissi,A Abali,HH Somaily,A El Kissani,K El Assali,A Outzourhit

Journal

Journal of Alloys and Compounds

Published Date

2022/11/30

Anodic TiO

The effect of annealing temperature on the morphology, structure, and photocatalytic response of TiO2 nanotubular prepared by anodization of a pure titanium foil was investigated. The anodization was carried out in a glycerol/H2O/NH4F electrolyte at room temperature, with two-electrode configurations. The morphology and structure of the nanotubes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that the annealing temperature affects strongly the morphology, the crystallinity, and the phase composition of the TiO2 nanotubes. The as-anodized TiO2 nanotube layers present an amorphous structure and the crystallization to the anatase phase begins at 400 C. In addition, the rutile phase was observed at 600 C. Of the anatase phase, 83.3% is transformed into rutile when annealing temperature increases from 400 to 700 C. It is found that the phase composition of TiO2 impacts directly the photocatalytic degradation of the carbamazepine. The high photocatalytic activity was reached when the mixture of anatase and rutile exhibited a composition of about 56.3% and 43.7%, respectively. Increasing solution pH from 4 to 10 increases the degradation efficiency from 74.6 to 83%.

Authors

Abdelaaziz Aityoub,Mohy Eddine Khadiri,Salah Rafqah,Abdesselam Abouelfida,Abdelkader Outzourhit

Published Date

2022

Comparison of Fixed-Tilt and Tracking PV Plants Coupled to Reverse Osmosis Desalination System: Case of Agadir and Ouarzazate

The water desalination by reverse osmosis (RO) requires a cheap and affordable source of electricity due to the relatively high specific energy consumption of this technology. The implementation of desalination systems working with renewable energies offers a solution to this situation. The aim of this study is to optimize the process of RO desalination by using photovoltaic (PV) solar energy. In this work, we studied three PV systems in two sites: Agadir and Ouarzazate. The compared systems are the Horizontal Single Axis Tracking (HSAT), the Dual-Axis Tracking (DAT), and the fixed plants. The comparison performance is based on performance ratio (PR) and levelized cost of energy (LCOE). The different simulation results by PVsyst software have shown that the fixed PV plant gives the best performance in Agadir, with a PR of 82.33% and a LCOE of 0.520 MAD.kWh−1. While, in Ouarzazate, the HSAT system is the …

Authors

H El Mouden,M Touba,M Akhsassi,F Ait Nouh,R Benbba,M Jabbour,L Mandi,A Outzourhit

Published Date

2022/5/20

Fast and non-selective photodegradation of basic yellow 28, malachite green, tetracycline, and sulfamethazine using a nanosized ZnO synthesized from zinc ore

The present study aims to investigate the photocatalytic process for treating polluted solutions charged with organic matter using a nanosized zinc oxide catalyst. In this approach, zinc oxide nanoparticles (ZnO NPs), were successfully synthesized by hydrometallurgical process starting from zinc ore. The prepared catalyst was characterized by X-ray diffraction, cell parameters were refined by Rietveld method, and specific surface area measurements were performed using the BET method. Microstructure of the synthesized ZnO was carried out using scanning electron microscopy (SEM) coupled with EDX analysis, and transmission electron microscopy (TEM). According to BET analysis, ZnO has a very high specific surface area of around 74 m2/g. TEM analysis confirms the nanometric size of the ZnO prepared with values of around 90 nm. The photocatalytic results revealed that ZnO NPs are extremely effective and …

Authors

Mohamed Belghiti,Karim Tanji,Lekbira El Mersly,Isam Lamsayety,Khalid Ouzaouit,Hakim Faqir,Intissar Benzakour,Salah Rafqah,Abdelkader Outzourhit

Journal

Reaction Kinetics, Mechanisms and Catalysis

Published Date

2022/8

Subsurface Water Retention Technology Promotes Drought Stress Tolerance in Field-Grown Tomato

Agricultural activities depend heavily on irrigation in arid and semi-arid climates, which are one of the most water-limited areas, reducing agricultural productivity. As the climate changes, the lack of precipitation is expected to aggravate in these areas, requiring careful management of water use. Subsurface water retention technology (SWRT) may hold promise as a management tool to save water use and improve crop drought resistance. In this context, the effect of SWRT on tomato yield, growth, physiology, and biochemical characteristics, as well as soil characteristics under two regimes of water (100% field capacity (FC) and 50% FC) in open field conditions, was investigated. The results here suggest that drought affected tomato performance. Nevertheless, SWRT application significantly increased tomato yield (38%), chlorophyll fluorescence (3%), gas exchange (39%), and chlorophyll total content (49%), as well as soil fertility characteristics, with significant increases in organic matter (23%) and assimilable phosphorus contents (25%) compared with the control. Furthermore, it resulted in a significant reduction in enzymatic antioxidant activities and polyphenol and significant improvement in fruit quality by increasing protein content. This technique should be used as a valuable strategy to save irrigation water and mitigate the negative effects of water deficiency on tomato plants in arid and semi-arid regions.

Authors

Soufiane Lahbouki,Abdelilah Meddich,Raja Ben-Laouane,Abdelkader Outzourhit,Luigi Pari

Journal

Energies

Published Date

2022/9/17

A New Modelization of Concentrated/Simple Industrial InGaP/InGaAs/Ge and Silicon Solar Cells: Insights on High Leverage Variables

This paper aims plotting P-V curves of industrial solar cells (Concentrated InGaP/InGaAs/Ge; Simple InGaP/InGaAs/Ge; Concentrated Silicon; Silicon) under different parameters using the most updated mathematical modelization of a solar cell which is tackled in the first time in the literature. The second objective is finding high leverage parameters that influences the most the power at the output of the considered solar cells. It was found that the concentration ratio impacts the most concentrated solar cells while the irradiance influences the most solar cells without concentrators. An increase of 10% of the concentration ratio makes the power at the output of the concentrated InGaP/InGaAs/Ge/ Concentrated Silicon solar cells increasing by 3.7 W and 1.06 W respectively. Besides, an increase of 10% of the irradiance makes the power of the triple junction without concentrator rising by an average of 0.05 W. It is also …

Authors

Zineb Aqachmar,Tarik Bouhal,Hamid El Qarnia,Mohammed Boukendil,ElAlami Ibnouelghazi,Abdelkader Outzourhit

Published Date

2022/10/19

Effect of the RF-power and annealing on the structural, optical, morphological and electrical properties of RF-sputtered V2O5 thin films

Thin films of vanadium oxide were deposited on glass substrates by the radio frequency reactive sputtering from a high purity metallic vanadium target (99.7%) with a diameter of 10 cm. The reactive sputtering was carried out in an argon-oxygen gas mixture containing 10% of O2 and 90% of Ar. The films were deposited at different RF powers (150 W, 200 W, 250 W and 300 W) for a fixed deposition time of 150 min. X-ray diffractograms showed that the deposited thin films crystallized in an orthorhombic V2O5 phase. It was found that the crystallite size varies with the RF power and is maximized using 300 W as an RF power. Scanning Electron Microscopy and Raman scattering analyzes have confirmed the formation of V2O5 thin films. In addition, optical transmittance measurements were performed using a Shimadzu UV-PC spectrophotometer in the 220–2000 nm range. It was observed that the optical band …

Authors

Mohammed Bousseta,Lahcen Nkhaili,Abdelfattah Narjis,Abdelkader El Kissani,Abdelaziz Tchenka,Abdelkader Outzourhit

Journal

The European Physical Journal Applied Physics

Published Date

2022

Improving drought tolerance of Opuntia ficus-indica under field using subsurface water retention technology: changes in physiological and biochemical parameters

The prickly pear (Opuntia ficus-indica) is an essential economic and ecological medicinal plant in arid and semi-arid areas, especially in Morocco, where water scarcity affects its survival and growth. Evidence suggests that subsurface water retention technology (SWRT) may enhance crops’ drought resistance. A field experiment was conducted to explore SWRT application effects on cactus cladodes’ growth and physiological and biochemical performance under drought conditions. Two water regimes were applied (rainfed conditions; irrigated with 4 L of water twice a week) with two treatments (without SWRT; with SWRT). The results showed that cactus cladodes’ growth and physiological and biochemical parameters cultivated for 8 months were negatively affected by drought. Drought-exposed cactus cladodes under SWRT application showed an increase in surface area and cladode stomatal densities by 65 …

Authors

Soufiane Lahbouki,Lahoucine Ech-Chatir,Salah Er-Raki,Abdelkader Outzourhit,Abdelilah Meddich

Journal

Canadian Journal of Soil Science

Published Date

2022/5/17

Evaluation of arbuscular mycorrhizal fungi and vermicompost supplementation on growth, phenolic content and antioxidant activity of prickly pear cactus (Opuntia ficus-indica)

Prickly pear cactus (Opuntia ficus‐indica) is a medicinal plant that plays important economic and ecological roles in arid and semi-arid regions. This study aims to assess the effectiveness of arbuscular mycorrhizal fungi (AMF) inoculation isolated from O. ficus-indica rhizosphere and/or vermicompost supplementation on growth and biochemical properties of newly developed O. ficus-indica cladodes. The experiment was conducted in a greenhouse with four treatments: control, AMF inoculation and vermicompost application individually or in combination with AMF. After eight months of cultivation, the results showed that the application of AMF and/or vermicompost improved growth and stimulated mycorrhizal colonization. Treatments with AMF, vermicompost, and AMF + vermicompost treatments increased sugar and protein contents by 30, 55 and 67% and 21, 60 and 84%, respectively. In addition, these treatments …

Authors

Soufiane Lahbouki,Mohamed Anli,Soumaya El Gabardi,Mohamed Ait-El-Mokhtar,Raja Ben-Laouane,Abderrahim Boutasknit,Youssef Ait-Rahou,Abdelkader Outzourhit,Said Wahbi,Allal Douira,Abdelilah Meddich

Journal

Plant Biosystems-An International Journal Dealing with All Aspects of Plant Biology

Published Date

2022/7/4

Electrification of Africa through CPV installations in small-scale industrial applications: Energetic, economic, and environmental analysis

This paper aims to evaluate the energetic, economic, and environmental performances of small-scale concentrated photovoltaics (CPV) power systems under 107 African climatic and financial zones with different energy mixes. The proposed concept focuses on small-scale installations for small- or medium-scale industrial premises as such devices are involved in the international strategy about micro-grids. Yearly average electric productions, capacity factors, economic and environmental considerations, and sensitivity were all analysed. The mathematical methodology for calculating the power of a concentrated triple-junction solar cell, the annual energy conversion of a CPV plant, the costs, and the CO2 mitigation were assessed.The parametric study shows that the capacity factor becomes highest for a cell area of 5.5 cm2 or if the concentration ratio reaches the value of 2400. Furthermore, LCOE is lowest for …

Authors

Zineb Aqachmar,Pietro Elia Campana,Tarik Bouhal,Hamid El Qarnia,Abdelkader Outzourhit,Said Mouak,Atman Aqachmar

Journal

Renewable Energy

Published Date

2022/9/1

Fabrication and characterization of Ag-and Cu-doped TiO2 nanotubes (NTs) by in situ anodization method as an efficient photocatalyst

In this study, copper (Cu) and silver (Ag)–doped TiO2 nanotubes were fabricated by in situ anodization method to improve their photocatalytic performance. The resulting nanotubes (NTs) were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and Mott-Schottky analysis. The SEM study shows the formation of NT structure and reveals that the doping does not affect the surface morphology. The XPS analysis proves that a mixture of Ag0/Ag+ and Cu+/Cu2+ exists simultaneously on the surface of the Ag- and Cu-doped TiO2 NTs, respectively. XRD and Raman spectroscopy analyses show that the doping shifted the anatase and rutile phase transformation and stabilized the anatase phase. The Mott-Schottky measurements demonstrate that the potential of the flat band shifted to …

Authors

O Zakir,A Ait Karra,R Idouhli,M Elyaagoubi,M Khadiri,Burak Dikici,A Aityoub,A Abouelfida,A Outzourhit

Journal

Journal of Solid State Electrochemistry

Published Date

2022/10

A comparative study of greenhouse shapes and orientations under the climatic conditions of Marrakech, Morocco

In this study, the performances of three commonly used greenhouse shapes even-span, uneven-span, and elliptic are compared in the climatic conditions of Marrakech, Morocco. The dimensions (length, width, and height) of the greenhouse types are kept the same. A mathematical model for computing the total hourly solar irradiation gained by each greenhouse shape during the whole year was developed for both north–south and east–west orientations. This model is applicable and suitable for other shapes and locations in the world. Hourly and monthly solar irradiation transmitted inside the greenhouse system were computed individually for all studied greenhouse types and orientations. An extensive comparison was then made to determine the most suitable greenhouse shape and orientation for our site (Marrakech). The results show that the uneven-span shape greenhouse with a roof inclination angle …

Authors

A Mellalou,A Mouaky,A Bacaoui,A Outzourhit

Journal

International Journal of Environmental Science and Technology

Published Date

2021

Monitoring and Control System of a Hybrid Micro-CSP/Biomass Boiler System for Traditional Baths

Traditional hammams are big consumers of wood-energy and water. This work presents a hybrid micro-csp/biomass system for space heating and hot water production in traditional baths that enables to offset the wood that is inefficient used in such baths. In addition, energy efficiency of these baths is enhanced through an optimal control system. Furthermore, the use of local agricultural residues instead of wood all contribute to reducing the stress on forests. The system to monitor and control the consumption of hot water and energy is presented. The data can be locally stored and transferred through internet, together with system faults. Preliminary test of the micro-csp showed that the maximum temperature achieved at the outlet of the parabolic trough system was 41.7 ℃ while at the bottom of the storage tank it was 34.4 ℃ corresponding to a 8.7 ℃ increase even though water was withdrawn by users. Space …

Authors

Said Lamghari,Hassan Hamdi,Mehdi Khaldoun,Mickael Benhaim,Fatima Ait Nouh,Abdelkader Outzourhit

Published Date

2021/1/29

Experimental and CFD investigation of a modified uneven-span greenhouse solar dryer in no-load conditions under natural convection mode

An uneven-span modified greenhouse dryer was constructed and tested in no-load conditions under natural convection mode under the weather conditions of Marrakech, Morocco, for two distinct days. Moreover, a CFD evaluation of the uneven-span greenhouse dryer was performed as tool to visualize the air temperature distribution inside the dryer. For validating the CFD model, the temperature variations along the hours of the day were compared to the experimental results. A good agreement is obtained between the computed and measured inside air temperature with a difference not exceeding 8.46°C, with a correlation coefficient () and root mean square percentage deviations () 0.94 and 8.17, respectively. Furthermore, the maximum inside air temperature was measured to be 56°C and 52°C while the minimum inside relative humidity was measured to be 17% and 12%, for day-1 and day-2, respectively. The benefice of using asphalt as a floor covering material was revealed as an efficient way to heat the inside air at low solar radiations. The performances of the dryer were evaluated by the percentage of net heat gain variation as a way to validate the effectiveness of the dryer. This latter is found to be equal to 46% and 48% for the two days, respectively.

Authors

Abderrahman Mellalou,Walid Riad,Salma Kaotar Hnawi,Abdelaziz Tchenka,Abdelaziz Bacaoui,Abdelkader Outzourhit

Journal

International Journal of Photoenergy

Published Date

2021/7/29

Multi-Objective Optimization of a Shading System to Reduce Heating and Cooling Energy Needs of a House in Benguerir, Morocco

This work presents a methodology combining multiobjective optimization with MOBO and building energy simulation with TRNSYS, to optimize shading coefficients to reduce the heating and cooling energy needs of an existing building in Benguerir-Morocco. The optimization was performed using the non-dominated sorting genetic algorithm of (NSGA-II). Optimal values for the shading coefficients of windows located on different orientations were determined. The optimal heating/cooling demand was found to be about 130 kWh/m 2 .year instead of 207 kWh/m 2 .year of the energy needs of the building.

Authors

Houda Er-Retby,Bouthayna Idrissi Gartoumi,Hicham Mastouri,Hassan Radoine,Hicham Bahi,Abdelkader Outzourhit

Published Date

2021/11/23

Optimal designs of thermoelectric generators for supplying maximum external load

The operation of a thermoelectric generator (TEG) is a complicated multidisciplinary subject since it involves the phenomenon of electrical and thermal transport in a dependent manner. This paper focuses on determining the optimum electrical load resistance to be supplied by a given TEG system. Thermal exchanges and electrical transport were evaluated through existing mathematical tools. Our model using a computer program, considering the leg length as a variable parameter, revealed that the optimum geometric ratio is between the two most known values, 1 and (1 + ZT)1/2 where ZT is the dimensionless figure of merit of the TE couple. However, the found results revealed that these values regain validity for highly conductive fluid. In particular, we observed that high convection coefficients such as that of water tend to impose effective resistance as the optimum value of the external load resistance …

Authors

A Mellalou,L Nkhaili,Q Mahmood,Bakhtiar Ul Haq,A Narjis,A Outzourhit

Journal

Journal of Electronic Materials

Published Date

2021/12

Controlled synthesis of oriented zinc oxide nanowires arrays by electrochemical deposition on sputtered layer

In this study, dense zinc oxide nanowires were electrochemically synthesized on sputtered zinc oxide buffer layers substrates using a solution of zinc chloride as a precursor. The control of nanowires density was studied. X-Ray Diffraction patterns revealed the formation of pure wurtzite zinc oxide structure. The mechanism of the formation of zinc oxide nanorods from the nucleation to the growth stage is proposed based on the study of the deposition parameters. Optical analysis reveals that these films can be involved in solar cells as window layers. Moreover, controlling structural properties of the buffer is an excellent way to control the formation of nanorods during the nucleation step. In fact, Scanning Electronic Microscopy images and reflectometry analysis showed that the buffer layer consists of dense nanoparticles, with a density that increases by increasing the radiofrequency frequency power, This can be …

Authors

Lahcen Nkhaili,Abdelkader El Kissani,Hind El Aakib,Abderrahmane Abbassi,Abdelfattah Narjis,Amane Oueriagli,Abdelkader Outzourhit

Published Date

2021

Performance Of An Air Solar Collector With Different Absorber Modifications Under The Climatic Conditions Of Marrakech-Morocco

Solar air collectors are commonly used in a variety of domestic and industrial fields. The simple design and low maintenance cost are among their advantages compared to other solar collectors. However, the main challenge of this type of collector is the low heat transfer coefficient. In this work, the effect of different designs of the absorber plate (waved and V corrugated modification) on the thermal performances, the heat exchange effectiveness and the air outlet temperature of a Double-Pass Parallel-Flow air solar collector was investigated under the solar radiation of MarrakechMorocco in a clear day and for three different mass flows rates (0.008 kg s-1, 0.012 kg s-1 and 0.016 kg s-1). The numerical study was done using Computational Fluid Dynamics (CFD) by the mean of ANSYS Fluent 16.0. The obtained results showed that the V corrugated modification is the most efficient one with efficiency equal to 76.92 % and 87.97 % under the lowest and highest mass flow, respectively.

Authors

Abderrahman MELLALOU,Ammar MOUAKY,SAMB Cheikh,YUİ-YİP Lau,Abdelaziz BACAOUİ,Abdelkader OUTZOURHİT

Journal

Journal of the Institute of Science and Technology

Published Date

2021/1/9

A simple route for synthesis of copper iron tin sulfide thin films

Copper iron tin sulfide Cu2FeSnS4 (CFTS) thin films are prepared by a facile and low-cost route using sol-gel spin-coating method without a sulfurization step. The optimal condition for synthesis of CFTS thin films has been determined. X-ray diffraction and Raman spectroscopy analysis revealed that the formation of a pure phase of CFTS thin films at 400 °C for 40 min with a large crystallite size 60 nm. The morphological and chemical composition study indicates the formation of uniform, smooth, cracks free and nearly stoichiometric thin films. The films show p-conductivity, good optical and electrical properties; high absorption coefficient >104 cm−1 in visible region, band gap energy of about 1.5 eV, carrier density of 3.85 1016 cm−3 and low resistivity of 0.364 Ω.cm. The obtained physical properties of CFTS thin films are suitable for solar cell applications.

Authors

H Chaib,K Elassali,A Outzourhit

Journal

Materials Letters

Published Date

2021/6/1

Solar power output forecasting using Artificial Neural Network

The solar power generated by photovoltaic modules depends on many parameters namely the solar radiation and the cell temperature as these variables affect the current and voltage provided by the modules. In addition, cable loses, conversion losses and cloud coverage can also affect the power output. In this work, we propose to build a deep learning model that will implicitly take all these parameters into account and provide us with a prediction of the output power generated by PV power plants installed. The Artificial Neural Network used takes as an input the solar radiation, ambient temperature and modules’ temperature, and as target the solar power. The ANN model was trained in a first experiment to give an hourly prediction. The second one provides an entire day forecast. The obtained results are very promising and the predicted output power profile is in good agreement with the measured one.

Authors

Abdelkader El Kounni,Hassan Radoine,Hicham Mastouri,Hicham Bahi,Abdelkader Outzourhit

Published Date

2021/11/23

Designing Low-Cost Insulating Panels to Enhance Buildings’ Thermal Performance

The objective of this paper is to picture an applicable idea of adopting a new passive system for building’s envelope enhancement. It is about designing and inspecting the impact of integrating an external panel to the façades of already existing buildings, on the effect of the thermal performance and indoor conditions of specific residential buildings in Africa and Morocco. The Low-Cost Panels (LCP) are implemented taking into consideration several parameters and standards to be applicable for most climatic conditions mainly the hot semi-arid which the abundant in Africa and Morocco. In this vision, decided combinations of possible high thermal insulation performance are studied by means of dynamic modeling using TRNSYS software. The credentials of the best materials or mixtures of filling are made on the basis of several aspects but most importantly the cost and the availability in the targeted contexts of the …

Authors

Hicham Mastouri,Hassan Radoine,Isaac Galobardes,Mouad Dahbi,Youssef Tamraoui,Gaetano Squadrito,Agatino Nicita,Hassan Chehouani,Brahim Benhamou,Abdelkader Outzourhit,Manuel Carlos Gameiro Da Silva

Published Date

2021/11/23

Reactively sputtered cobalt oxide coatings for solar selective absorber applications

Using a simple one-step sputtering procedure, we successfully deposited cobalt oxide thin films on glass and copper substrates in argon-oxygen plasmas. The reactive radio-frequency sputter deposition was carried out at a fixed power of 200 W, and in gas mixtures with various oxygen rates from 10% to 50%. Atomic force microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and emissivity measurements were used to study morphological, chemical and thermal radiation properties of elaborated Co3O4 coatings. The obtained cobalt oxide layers were found to be stable and highly adherent for 10%, 30% and 40% oxygen rates. The deposited Co3O4 thin films exhibit very promising thermal properties with spectral selectivities between 16.4 and 26.24. The reactive RF sputtering at 200 W in the 40%–O2-gas mixture allowed depositing cobalt oxide layers with optimal surface …

Authors

Hind El Aakib,Nabil Rochdi,Jean François Pierson,Abdelkader Outzourhit

Journal

Materials Today: Proceedings

Published Date

2020/8/28

A Subsurface Water Retention System to Collect Rain Water and Fight the Desertification

The increasing demand for sustainable food and non-food biomass production is challenging farmers all over the world, particularly in those areas where are short in water supply. Besides, the constant spreading of desertification in the Mediterranean region makes cropping even more difficult. In fact, the main problem related to desertification is the reduction of rainy events in a given region, although the annual rainfall remains constant. Hence, surface water reservoirs are accessible only for a limited period of the year forcing farmers to rely on belowground water, which is expensive and, sometimes, impossible to carry out. In the framework of MediOpuntia Project, a possible strategy to harvest rain water in arid and semiarid regions of the world, is represented by the installation of subsurface water retention Technology (SWRT) made of impermeable U-shaped barriers laid 80-100 cm belowground with aim to prevent water loss due to percolation. In addition, also soil nutrients loss is prevented as they will be collected by the membranes and kept available to roots after major rainy events. So far, the market still lacks the availability of machineries capable to lay impermeable membranes belowground in a single pass, and the present Project aims to fill this gap. The present study aims to develop and test a machinery capable to lay an impermeable membrane at 80-100 cm belowground to catch rainwater in arid and semi-arid areas.

Authors

L Pari,W Stefanoni,F Latterini,A Suardi,N Palmieri,V Alfano,S Bergonzoli,S Lazar,Al Fernando,M Rashad,A Outzourhit

Published Date

2021

Effect of chromium percentage doping on the optical, structural, morphological and electrical properties of ZnS: Cr thin films

Zinc sulfide (ZnS) and chromium-doped zinc sulfide (ZnS:Cr) thin films were grown on glass and Si substrates by cathodic radio-frequency (RF) sputtering. The deposition time and RF power were fixed respectively at 90 min and 200 W while chromium content was varied between 3 and 7%. The effect of Cr percentage on the structural, morphological and optical properties of the deposited thin films have been studied. X-ray diffraction analysis indicated that all the sputtered ZnS films were monophasic with a preferred growth orientation along the (111) plane of the zinc-blend (ZB) phase. The Cr-doped films, on the other hand, showed the (111), (2 2 2), and (311) peaks of the same phase that was confirmed by TEM. The crystallite size was about 17.75 nm for undoped ZnS films for RF power of 200 W and increased from 16.3 nm to 25.5 nm for ZnS:Cr. The strain was shown to decrease from 2.2 × 10−3 to1.45 × 10−3 …

Authors

CM Samba Vall,M Chaik,A Tchenka,S Hnawi,A Mellalou,M Aggour,A Outzourhit

Journal

Physica E: Low-dimensional Systems and Nanostructures

Published Date

2021/6/1

Doping effect on nanoscopic and macroscopic electrical properties of Barium Zirconate Titanate thin films

Lead-free Barium Zirconate Titanate thin films synthesized by sol-gel process were deposited on platinized silicon substrates. Atomic and piezoresponse force microscopies analysis have revealed low values for the surface roughness and local piezoelectric loops, respectively. Nanoscopic piezoelectric and ferroelectric properties decrease with zirconium content increasing. Dielectric measurements were made up to 1 MHz at room temperature. The highest dielectric permittivity and tunability are obtained for 10% of zirconium. Dielectric loss tangent decreases with frequency, zirconium content and electric field increasing. Thin films with 20% of zirconium could be particularly interesting for electronic applications.

Authors

Amina Tachafine,Didier Fasquelle,Rachel Desfeux,Anthony Ferri,Antonio Da Costa,J-C Carru,A Outzourhit

Journal

Spectroscopy Letters

Published Date

2021/8/9

Study of some passive solutions integrated to a residential building using multi-objective optimization

Over the last decades, the energy consumption in buildings continues to increase as a result of an increasing number of air-conditioning units. Our objective is to achieve a significant cooling load reduction in a residential building located in a semi-arid climate, specifically in Benguerir city (Morocco). The optimization process was initiated by performing a multi- objective optimization using DesignBuilder software. Subsequently, a study of different improvement scenarios with the help of the same software was carried out. The final results indicated that the thermal loads could be reduced by approximately 90 kWh/m 2 . year by introducing both insulation and a Moucharabieh system

Authors

Fatima Najoui,Noussaiba Rharbi,Safae Oulmouden,Hassan Radoine,Hicham Mastouri,Hicham Bahi,Abdelkader Outzourhit

Published Date

2021/11/23

Electrical, and dielectric properties of Yttrium-doped BaTiO3 ceramics

Electrical, and dielectric properties of Yttrium-doped BaTiO3 ceramics - Université du Littoral Côte d'Opale Accéder directement au contenu Documentation FR Français (FR) Anglais (EN) Se connecter Portail HAL ULCO Recherche Loading... Recherche avancée Information de documents Titres Titres Sous-titre Titre de l'ouvrage Titre du volume (Série) Champ de recherche par défaut (multicritères) + texte intégral des PDF Résumé Texte intégral indexé des documents PDF Mots-clés Type de document Sous-type de document Tous les identifiants du document Identifiant HAL du dépôt Langue du document (texte) Pays (Texte) Ville À paraître (true ou false) Ajouter Auteur Auteur (multicritères) Auteur (multicritères) Auteur : Nom complet Auteur : Nom de famille Auteur : Prénom Auteur : Complément de nom, deuxième prénom Auteur : Organisme payeur Auteur : IdHal (chaîne de caractères) Auteur : Fonction Auteur : …

Authors

Z Gargar,A Zegzouti,M Elaatmani,A Tachafine,D Fasquelle,A Outzourhit,M Daoud,M Afqir

Published Date

2021/12/15

Numerical Investigation of an Innovative Finned Structure in a Cylindrical Latent Heat Thermal Energy Storage Unit Using a Topology Optimization Approach

Latent heat thermal energy storage (LHTES) has received a great attention from many researchers due to the high energy density of phase change materials (PCM), which helps to store more energy and reduce the storage tank volume. However, most of these PCMs have low thermal conductivity, which requires enhancement techniques to efficiently distribute and store heat inside the LHTES unit. Therefore, different structures of finned heat exchangers have been investigated in the literature. In this paper, a numerical study was conducted using COMSOL Multiphysics, which is a modelling software based on the finite element method. This numerical study will examine in-depth the effects of a novel finned structure which is optimized to efficiently distribute the fins in the PCM domain by using a topology optimization approach while comparing it to a simple double tube heat exchanger without fins. The PCM used in this study is paraffin RT35 with water used as heat transfer fluid (HTF). The results presented in this study show a significant increase in performance by implementing this innovative finned heat exchanger with the help of temperature contours and liquid fraction plots for the discharging process. Moreover, the effect of the topology optimization volume constraints was also investigated.

Authors

I Ait Laasri,Z Elmaazouzi,A Outzourhit,MO Mghazli

Published Date

2021

The effect of bromide precursor on the properties of organolead halide perovskite for solar cell fabricated under ambient condition

Hybrid CH3NH3PbI3 − xBrx have drawn a tremendous interest as light harvesters in mesoscopic and planar heterojunction solar cells due to their high coefficient absorption. Herein, we investigated the difference between the effect of different bromide precursor on the properties of prepared CH3NH3PbI3 − xBrx thin film. In this study, the CH3NH3PbI3 − xBrx perovskite films were made by two processes. The first process consist in adding PbBr2 in the PbI2 with different molar ratios (x = 0, 0.05, 0.1) followed by depositing MAI in isopropanol. The second process resides in depositing CH3N3Br in isopropanol on the top of PbI2 − xBrx followed by dropping a solution of MAI in isopropanol. The study revealed that the prepared thin film using the first process with molar ratio 0.05 exhibited high crystallinity, suitable morphology, high absorption with non-radiative recombination. These attractive …

Authors

H Ait Dads,A El Kissani,S Hanaoui,D Ait El Haj,W Riad,C Samba Vall,M Chaik,A Outzourhit

Journal

Journal of Materials Science: Materials in Electronics

Published Date

2021/2

Nickel doped copper oxide thin films prepared by radiofrequency reactive sputtering: study of the impact of nickel content on the structural, optical and electrical properties

Nickel doped copper oxide thin films were grown on glass and silicon substrates using radiofrequency sputtering in an argon–oxygen atmosphere. The impact of doping on the structural, optical, and electrical properties of copper oxide was examined for various contents of nickel. The X-ray diffraction results revealed the polycrystalline monoclinic structure of copper oxide for the prepared films. Raman spectroscopy confirmed that only the copper oxide phase is evidenced in nickel-doped copper oxide films. The band gap energy increased with increasing nickel content. All the sputtered films showed p-type conduction and the resistivity depends on the nickel content.

Authors

H El Aakib,JF Pierson,M Chaik,H Ait Dads,C Samba Vall,A Narjis,A Outzourhit

Journal

Spectroscopy Letters

Published Date

2019/1/31

Earth Abundant Cu2FeSnS4 Thin Film Solar Cells

Firstly, copper iron tin sulfide Cu 2 FeSnS 4 (CFTS), thin films are fabricated by the sol-gel method on soda lime glass and FTO substrates at relatively low temperature without sulfurization step. The structural, morphological, compositional and optical properties of synthesized CFTS thin films have been studied by X-ray diffraction (XRD), Raman spectroscopy, Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and UV- visible - NIR spectrophotometer respectively. Secondly, the CFTS-based solar cells with structure Au / p-CFTS / n-CdS / i-ZnO / FTO has been fabricated and characterized under AM 1.5 standard illumination conditions. XRD and Raman spectroscopy revealed that the formation of a pure phase of CFTS thin film with an average crystallites size of 60 nm. SEM analysis showed a compact and uniform CFTS thin film. EDS analysis confirmed the presence of Cu, Fe, Sn and …

Authors

Abdelkader El Kissani,Abbelaziz Abali,Safia Drissi,Lahcen Nkhaili,Kassem El Assail,Abdelkader Outzourhit,Dris Ait El Haj,Hassan Chaib

Published Date

2021/11/23

Assessment of the levelized cost of electricity for a standalone power plant in Morocco: A case study

This paper presents a detailed analysis of the levelized cost of electricity (LCOE) for a real photovoltaic(PV)‐wind‐battery system installed in a remote area in Morocco. Besides the evaluation of the existing autonomous system, different scenarios are discussed. A techno‐economic evaluation of a PV‐battery system is carried out. Additionally, in order to enrich the discussion, the case of possible connection to the national grid, either in a medium‐ or low‐voltage level is considered. Costs were analyzed using on‐site collected data of energy production and initial (realistic) costs of the different components of the power plant with various discount and degradation rates. In contrast to the grid‐connected mode where all the available energy could be exploited, the detailed analysis shows that the LCOE is affected by the energy management strategy (droop control) in the standalone mode where a part of the energy …

Authors

Amine El Fathi,Abdelkader Outzourhit

Journal

International Transactions on Electrical Energy Systems

Published Date

2021/12

Numerical study of latent heat thermal energy storage based on an innovative hexagonal heat exchanger: performance evaluation

Thermal energy storage (TES) is a major challenge for the development and implementation of concentrated solar power (CSP) plants. Recently, latent heat thermal energy storage (LHTES) has gained the most interest in research because it has the advantage of increasing the energy density through the use of phase change materials (PCM). However, the main limitation of PCMs is the low thermal conductivity, which has a poor effect on the system performance. For this reason, several designs of heat exchangers have been proposed to overcome the decrease in the heat transfer rate. For this purpose, this numerical study will analyse the charging and the discharging behaviour of a new honeycomb structure never used in LHTES cylindrical systems, which is examined using the simulation software" COMSOL Multiphysics" that is based on the finite element method.

Authors

Imad Ait Laasri,Zakaria Elmaazouzi,Abdelkader Outzourhit,Mustapha El Alami

Published Date

2021

Characterization of Bi2Se3 prepared by electrodeposition

Bi2Se3 compound was deposited catholically under potential control, from a mixture solution composed from equimolar SeO2 and BiCl3. The concentration of selenium and bismuth precursors was about 5 ∙ 10−3 M. The electrodeposited films were grown on FTO substrates (Transparent Conductive Glass Fluorine-Doped Tin Oxide (FTO)–Coated Glass). Deposition potential was determined from cyclic voltammetry (CV) where the platinum mesh was taken as working electrode. The growth kinetics depends on the applied potential. It was found, using EDS technique, that suitable ratio of Se/Bi corresponding to Bi2Se3 was reached at − 250 mV vs. SCE (saturated calomel electrode). X-ray and grazing X-ray diffraction revealed that the obtained film at − 250 and − 200 mV/SCE consisted a rhombohedral Bi2Se3 structure. Raman shift was employed to corroborate the X-ray results with the possibility of …

Authors

M Khadiri,M Elyaagoubi,R Idouhli,M Mabrouki,A Abouelfida,A Outzourhit

Journal

Journal of Solid State Electrochemistry

Published Date

2021/2

A newly designed ZnO/CdS/CuO: Co solar cell and its performance

In this paper, a ZnO/CdS/CuO:Co solar cell was prepared on a glass/indium oxide (ITO) substrate. First, we use RF-sputtering to deposit the window (ZnO) layer by optimizing the oxygen pressure while keeping the RF power at 200 W. Fourier transform infrared and X-ray reflectometry spectra were carried out, and it is found that 30% of O2 is the optimal percentage to obtain the best density and the best refractive index for the ZnO layer. The CdS layer was then deposited by the sol–gel method to align the energy bands, and a layer of CuO:Co with a thickness of 750 nm was deposited, also by reactive RF-sputtering technique. Finally, the electrical contacts were made by depositing circular silver electrodes. The obtained photovoltaic activity of device confirms that the aforementioned method is promising for further future optimizations.

Authors

Lahcen Nkhaili,Hind ElAakib,Chi-Te Liang,Abdelfatah Narjis,Hoda Aitdads,Abdelkader El Kissani,Abdelkader Outzourhit

Journal

Journal of Solar Energy Engineering

Published Date

2020/10/15

Energetic and economic evaluation of mono and poly c-Si grid-connected PV systems: In Ouarzazate, Morocco

The aim of this study is to evaluate and compare the energetic and economic performances of two grid-connected photovoltaic (PV) systems installed in the Polydisciplinary Faculty of Ouarzazate, Morocco. Two silicon-based PV modules are evaluated experimentally with the corresponding results simulated by the System Advisor Model (SAM) software. The evaluated performance parameters are the performance ratio (PR), the final yield, the capacity factor (CF) and the levelized cost of energy (LCOE). The measured and simulated values have shown that the p-Si modules give the best performance compared to the m-Si, respectively, with a PR of 80% and 78%, a capacity factor of 21.9% and 20%, and a low LCOE of $59/MWh.

Authors

Manar Jabbour,Yassine Darmane,Abdelhadi Baala,Mohamed Akhsassi,Hasnae El Mouden,Fatima Chaoui,Mustapha Raoufi,Abdelkader Outzourhit,Amine Bennouna

Published Date

2021/11/23

Optimum design and orientation of a greenhouse for seasonal winter drying in Morocco under constant volume constraint

In this work the solar radiation intercepted by two commonly used greenhouses, namely the even-span and uneven-span shapes, was optimized under a constant volume for the first time. The optimal shape and orientation of the greenhouse was determined for drying purposes during the winter period (from 1st October to 31st March) by varying the two decision variables (orientation of the greenhouse and its roof tilt angle) with a small step of 1°. The seasonal solar radiation transmitted inside the greenhouse was computed for each configuration and orientation in order to identify the optimal design and orientation. The solar energy transmitted was evaluated by taking into account the incidence angle dependence of the transmittance of the greenhouse cover (polycarbonate). The results showed that the uneven–span greenhouse with a roof tilt angle of 45° and an orientation of −80° (10° from the E-W orientation …

Authors

Abderrahman Mellalou,Walid Riad,Ammar Mouaky,Abdelaziz Bacaoui,Abdelkader Outzourhit

Journal

Solar Energy

Published Date

2021/12/1

Simulation and experimental investigation of a combined solar thermal and biomass heating system in Morocco

The integration of hybrid renewable energy systems, such as hybrid solar-biomass, to address thermal energy needs in various applications is a promising, efficient and eco-friendly solution that can be successfully applied for traditional baths in Morocco. Indeed, these systems are not widespread in Morocco, since traditional firewood furnaces are still commonly used for heating purposes in many different applications. Accordingly, the main objective of the study is to introduce a new hybrid solar-biomass system designed for space heating and hot water supply in a public bathhouse in Marrakesh, Morocco. This hybrid system includes small-scale pellet boilers and small dimension parabolic trough solar collectors (PTC), which is the first small-size PTC facility proposed for low temperature applications (less than 100 °C) in Morocco. Moreover, the preliminary simulation results of this hybrid solar-biomass system for …

Authors

Mohamed Krarouch,Said Lamghari,Hassan Hamdi,Abdelkader Outzourhit

Journal

Energy Reports

Published Date

2020/12/1

Preparation and characterization of nanocomposite of Co: CuO by radio-frequency sputtering for solar selective absorber application

In this work, CuO thin films with different cobalt percentages were deposited, at room temperature on glass and copper substrates, using radio-frequency sputtering under 30% oxygen partial pressure. The effect of Co content on structural, electrical, morphological and optical properties of CuO films was investigated in detail. The X-ray diffraction measurements revealed a polycrystalline monoclinic structure for all sputtered films. Raman analyses showed a peak broadening and shift due to the quantum confinement effect in the copper oxide nanoparticles. Adding cobalt leads to the decrease of the crystallite size and the band gap energy. Electrical measurements showed that the film conductivity increases with the Co content. All films exhibited good solar selectivity (>12) with high solar absorptance (>92%) and low thermal emittance (<7%). The obtained Co:CuO thin films could be suitable as potential candidates …

Authors

H El Aakib,JF Pierson,L Atourki,L Nkhaili,A El Kissani,A Narjis,A Outzourhit

Journal

Thin Solid Films

Published Date

2020/6/25

Promising shadow masking technique for the deposition of high-efficiency amorphous silicon solar cells using plasma-enhanced chemical vapor deposition

In this work, a detailed description of the various steps involved in the fabrication of high-efficiency hydrogenated amorphous-silicon cells using plasma-enhanced chemical vapor deposition, and a novel shadow masking technique is presented. The influence of the different masking methods on the cell parameters was experimentally investigated. Particularly, the short-circuit current density (Jsc), the fill factor, the open circuit voltage (Voc), and the resistive losses indicated by the shunt (Rsh) and series (Rs) resistances were measured in order to assess the performance of the cells as a function of the masks used during the cell fabrication process. The results indicate that the use of a masking technique where the p-i-n structure was first deposited over the whole surface of a 20 cm2 × 20 cm2 substrate, followed by the deposition, deposits the back contact through a metal mask, and by the ultrasonic soldering of indium to access the front contact is a good alternative to laser scribing in the laboratory scale. Indeed, a record efficiency of 8.8%, with a short-circuit current density (Jsc) of 15.6 mA/cm2, an open-circuit voltage (Voc) of 0.8 V, and a fill factor of 66.07% and low resistive losses were obtained by this technique. Furthermore, a spectroscopic ellipsometry investigation of the uniformity of the film properties (thickness, band gap, and refractive index) on large-area substrates, which is crucial to mini-module fabrication on a single substrate and for heterojunction development, was performed using the optimal cell deposition recipes. It was found that the relative variations of the band gap, thickness, and refractive index n are less than 1% suggesting …

Authors

Kawtar Belrhiti Alaoui,Saida Laalioui,Badr Ikken,Abdelkader Outzourhit

Journal

Frontiers in Mechanical Engineering

Published Date

2020/11/23

Investigation of the optical and electrical properties of ITO/ZnO/CdS/CuO: Co/Ag structure for solar cell

A capacitively coupled parallel plate glow discharge reactor has been used to deposit plasma polymerized pyrrole (PPPy), plasma polymerized N,N,3,5 tetramethylaniline (PPTMA) and plasma polymerized pyrrole-N,N,3,5 tetramethylaniline (PPPy-PPTMA) bilayer composite thin films on to glass substrates at room temperature. To deposit single-layer PPPy and PPTMA thin films, the deposition parameters such as flow-rate, power, vacuum order, etc. were kept almost same for all samples, but deposition time was varied to grow thin films with different thicknesses, so that the comparison of the results could be made for various plasma polymerized thin films. On the other hand, to deposit the bilayer composite films, pyrrole-monomer has been used as the parent-material and N,N,3,5 tetramethylaniline monomer has been deposited in different deposition time ratios after the pyrrole films were formed. The structural analyses by Fourier transform infrared (FTIR) spectroscopy have indicated that the monomer has undergone re-organization and the ring structure is retained during the plasma polymerization of PPPy and PPTMA thin films, and the bilayer composite thin films contain the characteristics of both of its components. From DTA and TGA traces it is observed that the weight loss in PPPy-PPTMA bilayer composite thin films is much higher than those of its component thin films even at relatively lower temperature. This behavior suggests PPPy-PPTMA bilayer composite thin films are less thermally stable and less breakdown thermal energy is needed for bilayer structure to dissociate the bonds than those of its components. From the UV-Visible …

Authors

Mohammad Mostofa Kamal

Published Date

2010

Dynamic simulation and economic analysis of a combined solar thermal and pellet heating system for domestic hot water production in a traditional Hammam

The combination of solar heating systems and low emission biomass boilers provides the opportunity to produce domestic hot water in large applications (multi-family houses, public sector, hotels, schools, etc) without the use of non-renewable energy. However, such systems are not yet widespread in Morocco, since traditional wood-fired boilers are still extensively used for water heating purposes in various applications. Therefore, the objective of this work is to evaluate the thermal performance and economic viability of a combined solar thermal and pellet heating system for hot water supply, designed for a public bathhouse under the climatic conditions of Marrakech, Morocco. Moreover, this paper presents the first small-size parabolic trough collectors installation designed for covering part of the hot water requirements in Morocco. In addition, the potential benefits of using such a system are discussed. The …

Authors

Mohamed Krarouch,Florian Ruesch,Hassan Hamdi,Abdelkader Outzourhit,Michel Haller

Journal

Applied Thermal Engineering

Published Date

2020/11/5

Towards valorizing natural coals in sodium-ion batteries: impact of coal rank on energy storage

Coal samples of different ranks were investigated through various compositional, morphological/structural, and textural experiments prior to their electrochemical implementation in Na-ion half-cells. The purity of coals proved insignificant while distinctions in the flake size, pore width, pore distribution, ID/IG ratio, crystallite parameters (La and Lc) along with adjacent parameters, such as the R-empirical parameter, i.e., limited parallel graphene stacking proved more relevant for Na+ storage into the negative host electrodes. Coal powders were identified via a two-step TGA analysis technique displaying the overall carbon content of the coals and the impurities. Coal-based anode materials were prepared from raw and pyrolyzed coals (at 800 °C under argon gas-flow) and cycled in Na-ion half-cells to further investigate the impact of the coal rank on the energetic properties. High volatile bituminous coal with lower …

Authors

John Abou-Rjeily,Noureddine Ait Laziz,Cécile Autret-Lambert,Abdelkader Outzourhit,Moulay-Tahar Sougrati,Fouad Ghamouss

Journal

Scientific Reports

Published Date

2020/9/28

Fabrication of TiO2 nanotube by electrochemical anodization: toward photocatalytic application

In this study, a self-organized nanotubular titanium dioxide (TiO2) array was successfully produced by anodizing pure titanium in a mixture of glycerol, distilled water (8% vol.), and ammonium fluoride using a dual electrode system. The size control and distribution of the nanopores were performed in a DC voltage range varying from 30 V to 60 V. The diameter of TiO2 nanopores varies from 59 to 128 nm depending on the anodizing voltage. Energy-dispersive X-ray spectroscopy (EDX) analysis reveals that the as-prepared films are essentially composed of TiO2. According to the X-ray diffraction (XRD) and Raman spectroscopy analysis, the nanotubular arrays of TiO2 annealed at 600°C for 2 hours are composed of a phase mixture of anatase and rutile. Mott-Schottky analysis showed that the TiO2 nanotubes are consistent with an n-type semiconductor with a donor density of about 1017 cm-3. Preliminary results on the photocatalytic degradation of a pharmaceutical pollutant showed that the TiO2 nanotubes can be used as a promising material for application in wastewater treatment.

Authors

O Zakir,R Idouhli,M Elyaagoubi,M Khadiri,A Aityoub,Y Koumya,S Rafqah,A Abouelfida,A Outzourhit

Journal

Journal of Nanomaterials

Published Date

2020/12/28

A simple method to control the growth of copper oxide nanowires for solar cells and catalytic applications

Copper oxide nanowires (CuO NWs) were synthesized by thermally oxidizing copper foils at various heating rates. It has been shown that both monoclinic CuO and cubic Cu2O phases were grown on the copper surface with NW diameters of almost 200 nm for all samples. While NWs were shown to be dense for low heating rates, they end up being broken for quick heating. The underlying growth mechanism was described basing on a detailed comprehensive study, and the effect of the heating rate was explained by considering the thermal shock effect and in-plane tensile stresses on curved surfaces. This study contributes to the research for suitable methods for the use of recyclable metals in technological applications. In particular, copper oxide NWs were deposited, for the first time, on FTO/glass substrates, and the optical characterization revealed that this method is a promising way to improve the surface contact for solar cells and catalytic applications.

Authors

L Nkhaili,A Narjis,A Agdad,A Tchenka,A El Kissani,A Outzourhit,A Oueriagli

Journal

Advances in Condensed Matter Physics

Published Date

2020/9/12

Effect of irrigation scheduling on canopy cover development and crop-water management related parameters of O. ficus-indica under prolonged drought conditions.

Opuntia ficus-indica is gaining scientists’ and policy makers’ interest worldwide as drought tolerant crop adopted to marginal low fertile soils. Few studies were conducted to estimate its water management parameters under different soil-climate conditions. O.ficus-indica was planted in the experimental farm of City of Scientific Research and Technological Applications (SRTA-City, Alexandria, Egypt) under different irrigation scheduling applications. The study aimed to understand the effect of severe water deficit on crop development and water management related parameters. First irrigation scheduling (T1) applied irrigation with fixed amount of water (7.2 m3 ha-1 week-1). The second (T2), was applied when soil water content (SWC) became below 35% of field capacity (Ɵfc) in effective root zone. The third (T3), was conducted when SWC was below 30% of Ɵfc. The results revealed higher yield under T1 than T2 and T3. Water productivity was the lowest in T1 (0.62 kg m-3) and the highest in T3 (18.13 kg m-3). Actual crop evapotranspiration (ETa) was significantly higher in T3 (4.80 mm day-1), than T2 (4.56 mm day-1) and T1 (3.84 mm day-1). No significant difference was found in soil water content, canopy cover, crop coefficient among the applied irrigation scheduling. Average canopy cover was 13.63%, 11.08%, and 10.22% for T1, T2, and T3, respectively indicating early crop development stage. The corresponding crop coefficient (kc) was between 0.19 in T1 to 0.23 in T2 and 0.24 in T3. Further study is recommended to confirm obtained results and estimate ETa and kc under middle and end crop development stages.

Authors

Maha Elbana,Eman H El-Gamal,Abdallah Mohamed,Ana Luisa Fernando,Luigi Pari,Abdelkader Outzourhit,Mahmoud Elwakeel,Wael EA El-Sheikh,Mohamed Rashad

Journal

Scientific Journal of Agricultural Sciences

Published Date

2020/12/1

Photovoltaic and impedance spectroscopy characterization of single-junction p–i–n solar cells a-Si: H solar cell deposited by simple shadow masking techniques using PECVD

Hydrogenated amorphous silicon p–i–n solar cells with a 1× 1 cm2 active surface area were fabricated using shadow masks on the 20× 20 cm2 glass substrate coated with a fluorine-doped tin oxide film. The intrinsic, n-type hydrogenated amorphous silicon (a-Si: H), and p-type a-SiC: H thin films were deposited using plasma-enhanced chemical vapor deposition at 13.56 MHz plasma excitation frequency and on 20× 20 cm2 and SnO2: F covered glass substrates. Low rf-power densities (less than 0.1 W/cm2) and substrate temperatures (less than 190○ C) were used for this purpose. Raman spectra of the films are dominated by a broad peak around 480 cm− 1 that is the characteristic of the amorphous silicon network for all the three types of films. Scanning electron microscopy measurements revealed that the surface of the a-Si: H films deposited on SnO2: F-coated glass substrates (Asahi-VU) replicates the texture of the SnO2: F film. Spectroscopic ellipsometry spectra were analyzed with the Tauc–Lorentz dispersion model, and the results revealed that the optical gap of the intrinsic a-Si: H films is on the order of 1.7 eV, while that of the a-SiC: H is on the order of 1.8 eV. These results were further confirmed by optical transmission measurements. The highest efficiency obtained for solar cells prepared with shadow masking under our condition is on the order of 8.83% with a Voc of 0.856 V, a short circuit current density of 15.6 mA/cm2, and a fill factor of 66.07%. The obtained efficiency is slightly lower than the record efficiency obtained in this family of cells (10.3%) prepared by laser scribing because the low short-circuit current slightly lowers the …

Authors

Kawtar Belrhiti Alaoui,Saida Laalioui,Zakaria Naimi,Badr Ikken,Abdelkader Outzourhit

Journal

AIP ADVANCES

Published Date

2020/9/1

See List of Professors in Abdelkader Outzourhit University(Université Cadi Ayyad)

Abdelkader Outzourhit FAQs

What is Abdelkader Outzourhit's h-index at Université Cadi Ayyad?

The h-index of Abdelkader Outzourhit has been 22 since 2020 and 30 in total.

What are Abdelkader Outzourhit's top articles?

The articles with the titles of

Energy, exergy, environment and techno-economic analysis of hybrid solar-biomass systems for space heating and hot water supply: Case study of a Hammam building

Improvement of melting performance in a longitudinal finned latent heat thermal energy storage unit

Fabrication and characterization of ITO/CuS thin films-based thermoelectric generators

Phase transition, structural, optical and thermoelectric properties of spin coated CuxS thin films

A Comparison of Different Rear Irradiation Modeling Methods in a Bifacial PV System

Biomass screening for syngas production by flash photopyrolysis

The Impact of Bio-Sourced Materials on the Building’s Energy Performance in a Semi-Arid Climate

Energy performance assessment of a novel enhanced solar thermal system with topology optimized latent heat thermal energy storage unit for domestic water heating

...

are the top articles of Abdelkader Outzourhit at Université Cadi Ayyad.

What are Abdelkader Outzourhit's research interests?

The research interests of Abdelkader Outzourhit are: Energies renouvelables, PV, Stockage

What is Abdelkader Outzourhit's total number of citations?

Abdelkader Outzourhit has 4,043 citations in total.

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