Article
Optics
Mohamed Mousa, Fathy Z. Amer, Roaa Mubarak, Ahmed Saeed
Summary: A novel proposal and simulation of a tandem solar cell with Perovskite/CIGS-GeTe to improve open-circuit voltage and temperature stability was presented. The addition of GeTe to the CIGS bottom subcell significantly improved overall performance, leading to a 3% efficiency improvement compared to the Perovskite/CIGS tandem cell.
Article
Chemistry, Physical
Chunyang Dong, Di Hu, Karima Ben Tayeb, Pardis Simon, Ahmed Addad, Martine Trentesaux, Danilo Oliveira de Souza, Sergei Chernyak, Deizi V. Peron, Amelle Rebai, Jean-Francois Guillemoles, Xavier Wallart, Bruno Grandidier, Andrei Y. Khodakov, Negar Naghavi, Vitaly V. Ordomsky
Summary: Selective methane photocatalytic oxidation to CO and H2 at ambient conditions is a main challenge in the chemical industry. In this study, conventional Cu (In,Ga)Se2 (CIGS) absorbers used in solar cells were found to be excellent candidates for methane valorization. A thin film of CIGS coated over Mo demonstrated exceptional performance in methane partial oxidation to CO and H2, with a stable CO productivity of 2.4 mmol per gram of CIGS and a selectivity to CO of over 80%.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Electrical & Electronic
Celal Alp Yavru, Murat Kaleli, Ismail Serkan Uncu, Murat Koc, Durmus Ali Aldemir
Summary: Glass/Mo/CIGS/Yb Schottky photodiodes were fabricated by the physical vapor deposition method. The structural and morphological characterization of the CIGS layer on Mo was carried out. The current-voltage (I-V) characteristics were studied in the dark, under solar light, and infrared. The study revealed that the diodes had an ideality factor of 1.55 and a zero bias barrier height of 0.84 eV in the dark. Moreover, the rise and decay times were shorter for solar light compared to infrared, and decreased as solar light intensity increased. The responsivity value for 100 mW/cm2 solar light was found to be 8.5 mA/W, while for infrared light it was 3.4 mA/W. Capacitance-voltage and conductance-voltage characteristics were also evaluated for different frequencies.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Materials Science, Multidisciplinary
A. M. Laoufi, B. Dennai, O. Kadi, M. Fillali
Summary: The paper discusses the simulation of a double junction CGS/CIGS solar cell using Silvaco ATLAS software, demonstrating the performance parameters and efficiency of the top and bottom solar cells.
CHALCOGENIDE LETTERS
(2021)
Article
Materials Science, Multidisciplinary
S. M. Bagher Ghorashi, P. Karimi, F. Jahantigh, M. Esmaeili-Zare
Summary: The study investigated the structure and optimal thickness of CIGS solar cells using CdS and TiO2 buffer layers. The proposed structure is simpler compared to other structures proposed so far.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Optics
Parinaz Khaledi, Mahdi Behboodnia, Mohammad Karimi
Summary: Temperature is a parameter that is often overlooked but plays a crucial role in the simulation and construction of solar cells. The study found that increasing temperature decreases the open-circuit voltage and increases the short-circuit current of solar cells. Additionally, the filling factor initially increases and then decreases, while the overall efficiency sharply decreases with higher temperature. By reducing the temperature, it is possible to achieve an efficiency of over 32% in cadmium telluride solar cells with FTO/SnO2/CdS/CdTe/Cu2O structure.
INTERNATIONAL JOURNAL OF OPTICS
(2022)
Article
Polymer Science
Tarek I. I. Alanazi, Mona El Sabbagh
Summary: A numerical model based on TCAD simulation is presented to evaluate the performance of a novel two-terminal all-polymer/CIGS tandem solar cell. The model is validated by comparing the simulation results with standalone fabricated all-polymer and CIGS single solar cells. Optimization techniques including band alignment and thicknesses of polymer and CIGS layers were applied to enhance the tandem performance.
Article
Polymer Science
Tarek I. Alanazi, Abdulaziz Alanazi, Ezzeddine Touti, Ahmed M. Agwa, Habib Kraiem, Mohana Alanazi, Abdulrahman M. Alanazi, Mona El Sabbagh
Summary: This study proposes a two-terminal tandem solar cell based on organic thin films and antimony selenide, achieving high photovoltaic conversion efficiency through simulation calculations. This solar cell has the advantages of non-toxicity and low cost, making it suitable for wearable electronics and other applications.
Article
Multidisciplinary Sciences
Velina Kozareva, Caroline Martin, Tomas Osorno, Stephanie Rudolph, Chong Guo, Charles Vanderburg, Naeem Nadaf, Aviv Regev, Wade G. Regehr, Evan Macosko
Summary: The cerebellar cortex is a complex brain structure with diverse roles, including regional specialization of Purkinje neurons and more continuous molecular variation within different types of cerebellar interneurons. Furthermore, molecular layer interneurons were found to consist of two distinct types with differences in electrophysiological properties. This study provides a comprehensive cellular atlas of the cerebellar cortex and suggests a framework for defining brain cell types based on molecular, morphological, and physiological characteristics.
Article
Energy & Fuels
Naceur Selmane, Ali Cheknane, Fakhereddine Khemloul, Mohammed H. S. Helal, Hikmat S. Hilal
Summary: This study aims to address the issues of expensive and hazardous indium element in CIGS solar cells, by using thinner CIGS layers and adding a second layer of CZTSe to enhance cell performance. The results show that adding CZTSe to a thin CIGS layer significantly improves conversion efficiency.
Article
Energy & Fuels
Mohamed Al-Hattab, L'houcine Moudou, Mohammed Khenfouch, Omar Bajjou, Younes Chrafih, Khalid Rahmani
Summary: This study aims to improve the photovoltaic performance of a solar cell based on GaSe materials by using CIGS-P+ as a buffer layer, leading to changes in open-circuit voltage, current density, and fill factor. The results show that the efficiency of the GaSe-based solar cell can be increased by approximately 10.06% with the use of CIGS-P+.
Article
Materials Science, Multidisciplinary
Serap Yigit Gezgin
Summary: In this study, ultrathin Ag/CIGS/n-Si/Al solar cells were prepared using the Pulse Laser Deposition (PLD) method, and the effect of CIGS ultrathin film thickness on the photo current was investigated. The results showed that increasing the laser ablation pulse number improved the crystallinity and photon absorption of the CIGS ultrathin films, but decreased the ratios of indium and gallium while increasing the ratios of copper and selenium.
Article
Materials Science, Multidisciplinary
Haoran Li, Jiao Wang, Yanping Wang, Aimei Zhao, Bing Li, Wei Li
Summary: In this work, the deposition time of CBD-Zn(O,S) films was shortened by adding sodium nitrilotriacetate (Na3NTA) to the solution, resulting in high-quality films suitable as buffer layers for solar cells.
Article
Energy & Fuels
Nour El I. Boukortt, Mabrouk Adouane, Rawan AlHammadi
Summary: The research investigated the impact of various factors on ultrathin CIGS solar cell performance, finding that using thin film Al2O3 for rear-passivation can significantly improve cell performance by reducing rear side contact recombination losses. However, poor passivation was observed with high density of positive charge or high contact resistance at the interface. The optimal combination led to achieving the best cell performance.
Article
Computer Science, Information Systems
Nour El I. Boukortt, Salvatore Patane, Mabrouk Adouane
Summary: In this study, ultrathin Cu (In1-xGax) Se-2 solar cells were investigated using numerical simulations. The impact of different loss mechanisms, such as interface trap density (D-it) and absorber trap density (N-t), on cell performances were explored. Research found that recombination through traps is the primary loss process in the investigated cells. Additional simulations showed significant performance gains for different cell pitch sizes, absorber doping densities, Ga content, and graded bandgap under AM1.5 illumination. The proposed u-CIGS/PERT silicon device offers insights into the optimization of ultrathin-film CIGS solar cells.
Article
Materials Science, Multidisciplinary
Mejda Ajili, Samar Dabbabi, Nadir Bouarissa, Najoua Turki Kamoun
Summary: This paper compares the growth and optoelectronic properties of CuO materials synthesized on different substrates. X-ray diffraction analysis reveals the formation of CuO nanoparticles in a pure monoclinic structure, with decreasing crystallite size as the substrate changes. This size reduction is attributed to the enlargement of the energy band gap due to the quantum confinement effect. The electrical characteristics show that CuO/SnO2:F/glass thin films have the best parameters, making them suitable as absorber materials in photovoltaic devices.
MATERIALS TECHNOLOGY
(2022)
Article
Physics, Condensed Matter
Abdelhak Jrad, Manel Naouai, Amal Abdallah, Souad Ammar, Najoua Turki-Kamoun
Summary: ZnS (0, 6, 12, and 18 at. -%) nanostructures were synthesized on glass substrates via chemical bath deposition (CBD), with XRD revealing a cubic structure. XPS analysis identified chemical states of Zn2+, S2-, Co2+, and impurities like C and O. Morphological studies showed granular films, with optical transmission exceeding 70% and a band gap of 3.70 eV. Electrical properties slightly improved at a 12 at.-% doping ratio, while ZnS:(18 at.-% Co) exhibited a photocatalytic efficiency of 69% under visible light irradiation after 4 hours.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Optics
Mejda Ajili, Rihab Ben Ayed, Najoua Turki Kamoun
Summary: Novel hetero-junctions of p-CuO/n-ZnO:Sn and p-CuO/n-alpha-Fe2O3 were synthesized using the chemical spray pyrolysis technique. The physical, optical, and electrical characteristics of the CuO thin layers were investigated, with the p-CuO/n-ZnO:Sn hetero-junction showing the highest efficiency in photo-catalytic degradation of methylene blue dye under sunlight irradiation.
JOURNAL OF LUMINESCENCE
(2022)
Article
Engineering, Multidisciplinary
Samar Dabbabi, Z. Seboui, M. Tlili, N. Jebbari, A. Garcia-Loureiro, Najoua Kamoun
Summary: An approach utilizing Silvaco-Atlas software was developed to optimize FTO/InS/CIS hetero-junction solar cells, with the physical properties of the thin films analyzed to identify key parameters affecting solar cell performance. The combination of optimum parameters resulted in an efficiency of 38.20%, suggesting potential for high-efficiency CIS-based solar cell fabrication.
INTERNATIONAL JOURNAL OF MODELLING AND SIMULATION
(2022)
Article
Engineering, Electrical & Electronic
Amal Hammoud, Mehdi Souli, Faycal Kouki, Lassaad Ajili, Brahim Bouricha, Najoua Kamoun
Summary: In this study, Cu2MgSnS4 (CMTS) thin films were successfully grown on glass substrates by spray pyrolysis, and the effect of substrate temperature on their structural, morphological, optical and PL properties was investigated. The results showed that CMTS films grown at a substrate temperature of 210 degrees C exhibited the optimal crystallite size, smooth surface, and suitable band gap energy for solar cell applications. Additionally, the CMTS films demonstrated high sensitivity as a humidity sensor.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Abdelhak Jrad, Manel Naouai, Souad Ammar, Najoua Turki-Kamoun
Summary: Iron-doped zinc sulfide thin films were synthesized by chemical bath deposition with different Fe dopant concentrations. XRF analysis showed the doped films to be zinc rich and sulfur poor, and the crystalline quality and optical performance were found to be related to the Fe dopant concentration, with the sample doped 6 at.-% Fe showing the best performance. Photoluminescence intensity was also found to be very sensitive to the rise of iron concentration.
Article
Physics, Multidisciplinary
Amal Hammoud, Bechir Yahmadi, Mehdi Souli, Saleh A. Ahmed, Lassaad Ajili, Najoua Kamoun-Turki
Summary: In this study, chalcogenide Copper Magnesium Tin Sulfide (CMTS) thin films were deposited on glass substrates using a chemical spray pyrolysis technique. The structural, optical, and morphological properties of the CMTS thin films were analyzed. The results showed that the CMTS thin films had good crystallinity and photocatalytic activity, making them potential candidates for solar cells and organic dye catalysts.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Chemistry, Physical
Chayma Nefzi, Basma Askri, Youssef Dabaki, Jorge M. Garcia, Najoua Kamoun-Turki
Summary: Promising quaternary chalcogenide Cu2Fe1-xInxSnS4 thin films were grown using spray pyrolysis technique. The effects of indium inclusion on chemical composition, surface wettability, and optical and electrical properties were investigated. The results show that indium inclusion leads to changes in chemical composition, surface wettability, and optical and electrical behaviors, making the Cu2InSnS4 thin film a potential candidate for solar cell absorber and photocatalytic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Chayma Nefzi, Bechir Yahmadi, Nizar El Guesmi, Jorge M. Garcia, Najoua Kamoun-Turki, Saleh A. Ahmed
Summary: This study investigates the effects of gamma radiation on Cu2InSnS4 (CITS) thin films prepared by spray pyrolysis. The results show that gamma radiation significantly affects the crystalline structure and surface morphology of the films, leading to increased hydrophilicity and improved photocatalytic activity.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Nanoscience & Nanotechnology
Mohamed Manoua, Adel Bouajaj, Abdelmajid Almaggoussi, Najoua T. Kamoun, Ahmed Liba
Summary: The photonic performance of n-ZnO/p-Si heterojunction structure was investigated through numerical simulation, taking into account the interface states and defects in the ZnO emitter layer. The results showed that optimizing the parameters of the p-Si substrate could improve the photonic performance, including p-Si thickness, acceptor concentration, and minority carrier lifetime.
JOURNAL OF NANOPHOTONICS
(2022)
Article
Materials Science, Multidisciplinary
Amal Hammoud, Abdelhak Jrad, Bechir Yahmadi, Mehdi Souli, Faycal Kouki, Lassaad Ajili, Najoua Kamoun-Turki
Summary: In this study, Cu2MgSnS4 (CMTS) films were synthesized using the spray pyrolysis technique, and the impact of magnesium concentration on the properties of CMTS films was investigated. The results showed that CMTS films grown with a magnesium concentration of 5 mM exhibited the best crystalline quality and largest crystallite size, making them suitable for solar cell applications. These films also had a high absorption coefficient in the visible range.
Article
Chemistry, Multidisciplinary
Chayma Nefzi, Bechir Yahmadi, M. Lahmar, H. Ouzari, Nizar El Guesmi, Jorge M. Garcia, Najoua Kamoun-Turki, Saleh A. Ahmed
Summary: In this study, nontoxic Cu2Fe1-xAlxSnS4 films were successfully produced by substituting Fe with Al atoms. The physical properties of the films were investigated and it was found that the films exhibited a nanofiber structure and good antibacterial activity.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Olfa Kamoun, Abdelaziz Gassoumi, Mohd. Shkir, Nima E. Gorji, Najoua Turki-Kamoun
Summary: This work focuses on the fabrication of Ce and Cu co-doped MoO3 nanostructured films and their high efficiency in photocatalytic degradation of dyes.
Article
Chemistry, Physical
Chayma Nefzi, Basma Askri, Bechir Yahmadi, Nizar El Guesmi, Jorge M. Garcia, Najoua Kamoun-Turki, Saleh A. Ahmed
Summary: The removal of pollutants from urban wastewater treatment plants remains a challenge. The photocatalysis process has shown high efficiency in removing pharmaceuticals from aqueous matrices. In this study, Cu2Fe1-xAlxSnS4 thin films were synthesized using chemical spray pyrolysis and their properties were analyzed. The Cu2AlSnS4 film exhibited the highest extinction coefficient and hydrophilic surface. The effectiveness of CATS/SnO2:F surface for removing spiramycin was tested and showed improved removal efficiency.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Amal Hammoud, Mehdi Souli, Mohamed Fethi Diouani, Badriyah Alhalaili, Ruxandra Vidu, Najoua Kamoun-Turki
Summary: The effects of silver doping on the properties of CMTS thin films grown by spray pyrolysis were investigated. The results showed that the Ag-doped CMTS particles exhibited improved optical, electrical and antibacterial properties.
Article
Materials Science, Multidisciplinary
Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Yajiang Chen, Ai-Xi Chen, Xiaobing Luo
Summary: This work demonstrates how the current phase transition of atomic Bose-Einstein condensates in a trap can be controlled by applying an oscillatory driving field. The self-trapping effect in momentum space allows for a suppression of oscillations and a nearly constant directed current. Mean-field chaos serves as an indicator of the quantum phase transition. These findings are supported by an effective three-mode model.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinqin Ye, Yi Li, Jun Ding, Heng Yu, Xianqi Dai
Summary: Constructing van der Waals heterostructures is an efficient approach to enhance the properties and broaden the applications of two-dimensional materials. This study explores the structure, stability, electronic, and optical properties of BlueP/MoSSe heterostructures using density functional theory calculations. It is found that the bandgap and band edge of these heterostructures can be effectively modulated by strain and electric field.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Simone Anzellini, Silvia Boccato, Samuel R. Baty, Leonid Burakovsky, Daniele Antonangeli, Daniel Errandonea, Raffaella Torchio
Summary: The melting line of cobalt was investigated through experimental and theoretical methods, revealing a phase transition from hexagonal close-packed structure to face-centered cubic structure at high temperatures. The melting temperatures obtained from both methods showed good agreement and can be described by a Simon-Glatzel equation. Additionally, a thermal equation of state for the face-centered cubic phase of cobalt was determined.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jiajuan Qing, Shisheng Zhou, Jimei Wu, Mingyue Shao
Summary: This paper investigates the nonlinear chaotic vibrations of fractional viscoelastic PET membranes subjected to combined harmonic and variable axial loads. The viscoelasticity of PET membrane is characterized by the fractional Kelvin-Voigt model. The reliability of the numerical strategy is proved by comparing the results with available fractional systems and examples. The influence of system parameters on chaotic behaviors is described using bifurcation diagrams and detailed responses. This research provides a fundamental framework for controlling viscoelastic substrates in flexible manufacturing.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aly R. Seadawy, Syed T. R. Rizvi, Bazgha Mustafa, Kashif Ali
Summary: In this research, the complete discriminant system of polynomial method is used to analyze the dynamic characteristics of the cubic-quintic nonlinear Schrodinger equation with an additional anti-cubic nonlinear term, with a focus on the introduction of various optical solitons and wave structures. The analysis illustrates the importance of the polynomial method and provides dynamic results for the solutions.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Ruihang Huang
Summary: This study utilized bibliometric analysis to examine the development of multi-scale calculation of carbon nanotubes. Using CiteSpace III software, 1253 relevant articles from the SCI Expanded database were analyzed to identify research trends in this field. The findings revealed significant progress in the research of multi-scale calculation of carbon nanotubes from 1999 to 2023. The analysis of keywords, literature co-citation network, and keyword cluster network provided valuable insights into the knowledge base, important research results, and research hotspots in this field. Additionally, the study predicted future hot research directions using keyword breakout analysis. The research provides profound insights and important guidance for researchers and policymakers in the field of multi-scale calculation of carbon nanotubes to promote further innovation and development.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Zhou, Erhu Zhang, Shumin Zhao, Lei Zhang
Summary: A theoretic model is proposed to study the adhesion behavior of a vesicle adhering inside another vesicle in 2-D case. The model investigates the equilibrium shape equations and boundary conditions, and reveals the phase diagram and critical adhesion condition in different situations.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xin Yi, Jia-Cheng Huo, Yong-Pan Gao, Ling Fan, Ru Zhang, Cong Cao
Summary: The paper introduces an iterative quantum algorithm based on quantum gradient descent to solve combinatorial optimization problems, verifying the effectiveness and robustness of the algorithm through numerical simulations and comparison with other algorithms. Experimental results on a real quantum computer also demonstrate the feasibility and performance of the algorithm.
RESULTS IN PHYSICS
(2024)
