Numerical simulation of MASnI<sub>3</sub>/CuI heterojunction based perovskite solar cell
Amit Kumar Sharma, Deepak Kumar Kaushik
Abstract
Abstract The lead (Pb) free perovskite solar cells have gained much attention due to non-toxic nature. Owing to a smaller band gap of 1.3 eV, methylammonium tin iodide (III) (MASnI 3 ) can be considered an alternate light absorber layer compare to the lead-based perovskites (MAPbCl x I 3-x ). In this article, MASnI 3 based perovskite solar cell has been studied using a 1-D SCAPS simulator. The solar cell structure ITO/TiO 2 /MASnI 3 /CuI is simulated in superstrate configuration which achieves a photovoltaic efficiency less than 8 %. Photovoltaic efficiency of the solar cell is further improved to 17.93 % by optimizing thickness and total defect density of the absorber layer. Moreover, the role of defects at the interfaces: TiO 2 /MASnI 3 and MASnI 3 /CuI on the solar cell performance is also analyzed.