Browsing by Author "Hima, Abdelkader"

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    Enhancing of CH3NH3SnI3 based solar cell efficiency by ETL engineering
    (جامعة الوادي - university of el oued, 2020-06-12) Hima, Abdelkader; Khechekhouche, ,Abderrahmane; Kemerchou, Imad
    Solar cells based on organic-inorganic perovskites (PVK) are the subject of several researches in laboratories around the world. One of the most promising hybrid perovskite is the methylammonium lead tri-iodide MAPbI3 that is suitable for sun light harvesting. But the MAPbI3 is a toxic material, so in this paper is proposed another nature friendly candidate which is the methylammonium tin tri-iodide MASnI3. The proposed material is inserted into an n-i-p heterojunction solar cell which structure is electron transport layer (ETL)/PVK/hole transport layer (HTL). The used HTL is the PEDOT: PSS in combination with one of two ETLs which are the PCBM and the IGZO. Simulation efforts using 1D SCAPS was carried. It is found that IGZO ETL based solar cell yields a higher power conversion efficiency (PCE) compared with PCBM ETL based solar cell in the same thickness
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    An optimized perovskite solar cell designs for high conversion efficiency
    (Superlattices and Microstructures, 2019-05) Hima, Abdelkader; Lakhdar, Nacereddine; Benhaoua, Boubaker; Saadoune, Achour; Kemerchou, Imad; Rogti, Fatiha
    This paper reports the simulation and optimization of an organic/inorganic perovskite-based photovoltaic solar cell. Several structures for PSC are found in literature in order to enhance the conversion efficiency. The objectif of this work is to study and investigate different structures of solar cells based on perovskite materials to improve their performances. The simulated solar cell is made by sandwiching TiO2/Perovskite/spiro-OMeTAD layers where TiO2 is the electron transport layer (ETL), spiro-OMeTAD is the hole transport layer (HTL) and both CH3NH3PbI3 CH3NH3SnI3 are the perovskite (PVK) absorber layers. Therefore, the layer thicknesses of different materials are modified in order to find the better conversion efficiency of solar cells. The obtained results show that layer thicknesses that provide the maximum power conversion efficiency of 18.16% and 9.56% for both perovskite materials CH3NH3PbI3 and CH3NH3SnI3, respectively are 200 nm, 100 nm and 500 nm for spiro-OMeTAD, TiO2 and PVK materials, respectively. The numerical simulation was performed using the ATLAS device simulation software.
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    Simulation and optimization of CH3NH3PbI3 based inverted planar heterojunction solar cell using SCAPS software
    (جامعة الوادي - university of el oued, 2019-06-27) Hima, Abdelkader; Le Khouimes, Ahmed Khalil; Abdallah, Rezzoug; Ben Yahkem, Mouslem
    In order to improve the efficiency of a planar heterojunction organic-inorganic solar cell, this work is carried out using SCAPS software. The studied inverted P-I-N structure is PEDOT:PSS/ CH3NH3PbI3/ PCBM where PEDOT:PSS is the hole transporting layer (HTL), CH3NH3PbI3 is the Perovskite absorber layer (PVK) and PCBM is the electron transporting layer (ETL). The simulated structure is sandwiched between SnO2: FTO and Al which are the transparent and aluminum electrodes respectively. Simulation efforts are focused on thickness and density of states (donor’s and acceptors) effect on solar cell efficiency. Found results improved the power conversion efficiency (PCE) from 11.73% up to 19.58 %.