Numerical simulation of lead-free bismuth perovskite by using scaps (solar cell capacitance simulator)

Abstract

A perovskite solar cells were studied using the Solar cell capacitance simulator (SCAPS). The effect of the cation on the performance of perovskite solar cells with MA3Bi2I9 as the light-absorbing material and perovskite solar cells with Cs3Bi2I9 as the light-absorbing material were simulated and compared. MA3Bi2I9 and Cs3Bi2I9 achieved efficiencies of about 8.6% and 13.6%, respectively. The fluctuation in light absorption caused by the cations significantly affects the performance of perovskite solar cells. This research also investigated the effects of band-to-band recombination, absorber layer defect density, perovskite-electron transport layer interface defect density, perovskite-hole transportation layer defect density, series resistance, shunt resistance, and operating temperature on the solar cell performances.