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Tin perovskite (CH3NH3SnI3) have attracted a lot of attention and could be a viable alternative material to replace lead perovskite in thin film solar cells. A detailed understanding on the effects of each component of a solar cell on its output performance is needed to further develop the technology. In this work, a numerical simulation of a planar hetero-junction tin based perovskite solar cell using Solar Cell Capacitance Simulator (SCAPS) to study some parameters that can influence the performance of tin PSC with Cu2O as HTL and ZnSe as ETL performed. The thickness of absorber material, ETL and HTL, the bandgap of absorber material and ETL was investigated. Results revealed that the thickness and bandgap of the absorber material and ETL of ZnSe strongly influence the PCE of the device. The performance of the cell increases with reduction in thickness of ZnSe. ZnSe is found to be a replacement for TiO2 which is expensive. Cuprous oxide of HTL in tin based PSC is efficient and better than the expensive spiro-MeOTAD which is easily degradable. Furthermore, results of simulation and optimization of various thicknesses indicates that ZnSe has a PCE of 21.11%, FF of 68.33%, JSC of 33.51mA/cm2 and VOC of 0.92V. These values slightly increase after optimization of parameters to PCE of 22.28%, FF of 70.94%, JSC of 31.01mA/cm2 and VOC of 1.01V.

Investigating the Effect of ZnSe (ETM) and Cu2O (HTM) on Absorber Layer on the Performance of Pervoskite Solar Cell Using SCAPS-1D