Theoretical and Experimental Investigation of All‐Inorganic CsPbIBr2 Light‐Absorber‐Layer based Perovskite Solar Cells

Abstract In last few years, rapid surge in the construction of perovskite or perovskite‐like structures based photovoltaic cells have been noticed. Lead (Pb)‐halide perovskite materials possess excellent optoelectronic features which make it most significant light absorber layer for the construction of CsPbIBr 2 based perovskite solar cells (PSCs). In particular, CsPbIBr 2 has unique optoelectronic properties and has been considered as a potential candidate for photovoltaic cells. In present work, we have used one‐dimensional (1‐D) solar cell capacitance simulator (SCAPS) to optimize the photovoltaic performance of CsPbIBr 2 based PSCs. The optimized simulated PSCs showed excellent efficiency of 14.11 %. Further, we have also fabricated PSCs which showed good efficiency of 10.18 %.