Performance optimization of MASnI3 perovskite solar cells: Insights into device architecture

Abstract

Recent research has focused an extensive amount of attention on the lead-free substance lead-free methylammonium tin(Sn) tri-iodide (MASnI3), which has emerged as a highly potential absorber layer in the structure of the device. Because it has a larger visible absorption spectrum and a shorter band gap of 1.3 eV than the lead halide perovskite, MASnI3 is a potential alternative to MAPbX3. Through numerical simulation, the different parameters on the device performances are fully investigated. We achieved an open-circuit voltage (Voc) of 0.93 V, a short-circuit current density (Jsc) of 22.20 mA/cm2, a fill factor (FF) of 78.81 %, and a power conversion efficiency (PCE) of 16.39 % using the optimised conditions. It demonstrates the huge potential of recently created lead-free perovskite solar cells and opens up a large dimension of opportunities for the creation of novel perovskite solar cells with a variety of photovoltaic applications. The amalgamation of the Tungsten Disulfide (WS2) material layer between the electron transport layer (ETL) and the absorber layer raised the device module's power conversion efficiency to 20.36 %.