Abstract
Abstract The use of multilayer p-graphene as hole transporting layer has been successfully shown to improve the performance of perovskite solar cell. The structure of p-graphene/CH3NH3PbI3/n-cSi is designed and simulated in AFORS-HET software. We optimized the parameters of single layer p-graphene and obtained power conversion efficiency (PCE) of 12.21% under an illumination of AM 1.5G. With an increase in the number of p-graphene layers, the PCE falls down to 10.01%. The optimization of active layer parameters increases the PCE up to 12.27%. Further optimization of n-cSi parameters lead to the highest PCE of 16.75%. A significant effect of the operating temperature on the solar cell performance is observed. The effect of textured front surface on the solar cell performance is also studied and a PCE of 17.90% is obtained for textured surface as compared to 16.75% for planar surface. Our studies indicated that p-graphene may act as an efficient hole transporting layer in perovskite solar cell.
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