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Peregrine Soliton and Akhmediev Breathers in a Chameleon Electrical Transmission Line
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作者 Bedel Giscard Onana Essama Salome Ndjakomo Essiane +3 位作者 Frederic Biya-Motto Bibiane Mireille Ndi Nnanga mohammed shabat Jacques Atangana 《Journal of Applied Mathematics and Physics》 2020年第12期2775-2792,共18页
We analyze the particular behavior exhibited by a chaotic waves field containing Peregrine soliton and Akhmediev breathers. This behavior can be assimilated to a tree with “roots of propagation” which propagate rand... We analyze the particular behavior exhibited by a chaotic waves field containing Peregrine soliton and Akhmediev breathers. This behavior can be assimilated to a tree with “roots of propagation” which propagate randomly. Besides, this strange phenomenon can be called “tree structures”. So, we present the collapse of dark and bright solitons in order to build up the above mentioned chaotic waves field. The investigation is done in a particular nonlinear transmission line called chameleon nonlinear transmission line. Thus, we show that this line acts as a bandpass filter at low frequencies and the impact of distance, frequency and dimensionless capacitor are also presented. In addition, the chameleon’s behavior is due to the fact that without modifying the appearance structure, it can present alternatively purely right- or left-handed transmission line. This line is different to the composite one. 展开更多
关键词 Freak Waves Generation Transmission Line Metamaterials Right/Left-Handed Behaviors Tree Structures Collective Coordinates
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A Study on the Efficiency Gain of CsSnGeI3 Solar Cells with Graphene Doping
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作者 mohammed M. shabat Guillaume Zoppi 《World Journal of Condensed Matter Physics》 2023年第3期90-104,共15页
This paper presents a newly designed ultra-thin, lead-free, and all-inorganic solar cell structure. The structure was optimized using the SCAPS-1D simulator, incorporating solid-state layers arranged as n-graphene/CsS... This paper presents a newly designed ultra-thin, lead-free, and all-inorganic solar cell structure. The structure was optimized using the SCAPS-1D simulator, incorporating solid-state layers arranged as n-graphene/CsSnGeI<sub>3</sub>/p-graphene. The objective was to investigate the potential of utilizing n-graphene as the electron transport layer and p-graphene as the hole transport layer to achieve maximum power conversion efficiency. Various materials for the electron transport layer were evaluated. The optimized cell structure achieved a maximum power conversion efficiency of 20.97%. The proposed solar cell structure demonstrates promising potential as an efficient, inorganic photovoltaic device. These findings provide important insights for developing and optimizing inorganic photovoltaic cells based on CsSnGeI<sub>3</sub>, with n-graphene electron transport layers and p-graphene hole transport layers. 展开更多
关键词 Perovskite Solar Cells Efficiency Gain CsSnGeI3 Solar Cells Graphene Doping Photovoltaics Thin-Film Solar Cells Energy Conversion
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Antireflection Coating for Solar Cells Based on Graded-Index Materials
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作者 Yousef M. A. Adwan mohammed M. shabat Guillaume Zoppi 《Journal of Applied Mathematics and Physics》 2023年第5期1414-1428,共15页
The conversion of sunlight into electricity via photovoltaics presents tremendous opportunities for the generation of renewable energy. However, solar cells still face several challenges and limitations to further red... The conversion of sunlight into electricity via photovoltaics presents tremendous opportunities for the generation of renewable energy. However, solar cells still face several challenges and limitations to further reduce manufacturing costs and increase module efficiency. Photon management is paramount to increase the efficiency of the mainstream silicon-based cell and always includes a suitable antireflection coating (ARC) structure to decrease the reflectance (R) at the top surface. We propose a novel triple-layer anti-reflective coating (TLAR) consisting of three layers sandwiched between the upper cover (glass) and the substrate (silicon). The inner three layers are graded refractive index material (GIM) as an active layer, titanium dioxide (TiO<sub>2</sub>), and zinc sulfide (ZnS), respectively. The optical properties of the TLAR have been investigated using the transfer matrix method (TMM). The results of using GIM as the active medium lead to the reflection decaying to the minimum value, and the transmittance reaching the maximum values at a specific wavelength range. The proposed triple-layer anti-reflective coating (TLAR) structure presents a promising solution for enhancing the efficiency of solar cells. Its unique design and utilization of graded refractive index material (GIM) as the active layer make it a novel and innovative approach that holds great potential for advancing solar cell technology. 展开更多
关键词 Solar Cell Transfer Matrix Method TRANSMISSION REFLECTION and Quantum Efficiency ARC
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Analyzing and Exploring a Model for High-Efficiency Perovskite Solar Cells
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作者 mohammed M. shabat Mahassen H. Elblbeisi Guillaume Zoppi 《Energy and Power Engineering》 2023年第8期265-276,共12页
Perovskite materials have drawn a lot of interest recently due to their potential to increase solar cell efficiency. This study uses the solar cell capacitance simulator (SCAPS-1D) to develop and simulate a perovskite... Perovskite materials have drawn a lot of interest recently due to their potential to increase solar cell efficiency. This study uses the solar cell capacitance simulator (SCAPS-1D) to develop and simulate a perovskite solar cell made of semiconductor materials. The design that has been suggested is Al:ZnO/ZnO/CdS/CsSnCl<sub>3</sub> and MoS<sub>2</sub>. The analysis focuses on how different characteristics of the material affect the device’s performance. The analysis of the data reveals that the architecture had 26.15% power conversion efficiency (PCE). The solar cell creates an interest in developing a non-toxic solar cell with low manufacturing costs, outstanding conversion efficiency, and stability. 展开更多
关键词 PEROVSKITE Solar Cell High Efficiency CSSnCl3 Electrical Properties SCAPS
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