eng Science and Education Publishing American Journal of Energy Research 2328-7330 2023-05-14 11 2 93 99 10.12691/ajer-11-2-4 AJER20231124 article Alioune Sow sowalioune902@gmail.com 1 Saliou Seck 1 Mamadou Salif Mane 1 Amadou Ndiaye 1 Bachirou Ndiaye 1 El-Hadji Mamadou Keita 1 Babacar Mbow 1 Cheikh Sene 1 Physics Department, Faculty of Sciences and Technology, Laboratory of Semiconductors and Solar Energy, University Cheikh Anta Diop, Dakar Country 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%. http://pubs.sciepub.com/ajer/11/2/4/ajer-11-2-4.pdf Perovskite absorber hole transport layer electron transport layer solar cell