Abstract
Tin-based perovskite material is one of the promising candidates used in lead-free perovskite solar cells. In the present study, the use of graphene material as charge transport layers is suggested and the structure n-Graphene/CH3NH3SnI3/p-Graphene is simulated in AFORS-HET (Automat for Simulation of Heterostructures) software. The effect of layer properties on the performance of the proposed structure is analyzed. After optimizing the layer parameters, the best possible structure gives a Voc = 687.1 mV, Jsc = 19.93 mA cm−2, FF = 77.92% and efficiency = 10.67%. The textured nature of front surface enhances the efficiency of the cell from 10.67% to 13.28%. The effect of operating temperature is observed on the performance of the cell. The proposed structure is also modelled using one diode model in MATLAB software for comparison with AFORS-HET results. The results of the simulated and modelled structure are in good agreement with each other. To the best of our knowledge, the proposed structure and the corresponding results reported herein are new for the research community.
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