Numerical Simulation and Modeling of Nontoxic Perovskite Solar Cell Based on CH3NH3SnI3 with TiO2 as ETL and CuSbS2 as HTL

Lead halide perovskite based solar cell have gained much attention among researcher due to its high power conversion efficiency of over 23%.The most performing solar cell uses lead salt, which are highly toxic material thereby can pollute the environment with bad impact on human health.The consequences related to organic and inorganic lead salts perovskite is under debate.In this study we focused on lead free substitute, CH3NH3SnI3 light absorbing material for designing solar cell with TiO2 as electron transport layer and CuSbS2 as Hole Transport LayerThe numerical simulation is done with two proposed device with different HTL material.The choice of HTL material can significantly influence the charge transport properties, interface characteristics, and overall device performance.By modeling the devices using computational tools such as SCAPS (Solar Cell Capacitance Simulator), various performance parameters such as efficiency, fill factor, and current-voltage characteristics is analysed and compared with previous literature work.In our initial simulated results, device achieves the best efficiency of 29.39% with JSC = 33.500115mAcm-2,VOC = 1.0493V, and FF = 83.60%.Subsequently, we have analysed the impact of thickness on the recombination rate of charge carriers in the perovskite absorber layer