PERFORMANCE SIMULATION OF ECO-FRIENDLY SOLAR CELLS BASED ON CH3NH3SnI3

Abstract

Large-scale deployment of the perovskite photovoltaic technology using such high-performance materials as СH3NH3PbI3 may face serious environmental issues in the future. Implementation of perovskite solar cell based on Sn could be an alternative solution for commercialisation. This paper presents the results of a theoretical study of a lead-free, environmentally-friendly photovoltaic cell using СH3NH3SnI3 as a light-absorbing layer. The characteristics of a photovoltaic cell based on perovskite were modelled using the SCAPS-1D program. Various thicknesses of the absorbing layer were analysed, and an optimised device structure is proposed, demonstrating a high power conversion efficiency of up to 28% at ambient temperature. The analysis of the thicknesses of the СH3NH3SnI3 absorbing layer revealed that at a thickness of 500 nm, performance is demonstrated with an efficiency of 27.41 %, a fill factor of 85.92 %, a short circuit current density of 32.60 mA/cm2 and an open-circuit voltage of 0.98 V. The obtained numerical results indicate that the СH3NH3SnI3 absorbing layer may be a viable replacement for the standard materials and may form the basis of a highly efficient technology of the environmentally-friendly perovskite solar cells.