1 Result(s) for 'Cheikh Sene'
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Effects of Transport Window Layers on All-inorganic CsPbI3-xBrx Perovskites Based Solar Cells
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Alioune Sow, Saliou Seck, Mamadou Salif Mane, Amadou Ndiaye, Bachirou Ndiaye, El-Hadji Mamadou Keita, Babacar Mbow, Cheikh Sene
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American Journal of Energy Research. 2023 11 (2). doi: 10.12691/ajer-11-2-4
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Keywords: Perovskite, absorber, hole transport layer, electron transport layer, solar cell
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Context: All-inorganic perovskites based on CsPbI3-xBrx are promising halides for use in efficient photovoltaic devices due to their high stability. This generated a tremendous research interest from the scientific community to move towards this class of materials. However, perovskite solar cells based on CsPbI3-xBrx have not yet achieved the expected conversion efficiencies compared to their hybrid counterpart. In this work we used SCAPS 1D to model the all-inorganic CsPbI3-xBrx based solar cell, investigate and discuss the limitations of the device in order to improve its conversion efficiency. For this purpose, we used the normal (n-i-p) configuration with Al/ETL/CsPbI3-xBrx/HTL/ITO structuring. By varying the inorganic transport layers HTL and ETL, our study revealed that the best HTL/ETL combination is Cu2O as HTL and SnO2 as ETL. We otherwise have shown that acceptor and donor doping of Cu2O and SnO2 respectively offers a mean to reduce recombination in the device. The study showed that the acceptor (NA=1018cm-3) and donor (ND=1017cm-3) doping rates are the best dopant values for the cell. By optimizing the various study parameters, we obtained a high-performance normal structure PSC with a conversion efficiency (PCE) of 17.87%.
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