Abstract
This article reports a computational comparison modelling of two types of thin film perovskite solar cells which includes a standard lead based perovskite solar cell and tin based solar cell. The lead based perovskite solar cell shows better performance, however, they are not sustainable for a longer period of time due toxic materials, which are not environmental friendly and corrosive materials that react with perovskite layer and slowly corrode it, reducing the efficiency and badly affecting the physical state of the cell. Therefore, we proposed a tin based perovskite solar cell, which contains non-toxic and non-corrosive materials. Results indicate that the standard lead based perovskite solar cell show only 2.63% more efficiency as compared to non-toxic one. In addition, the stability under different operating temperatures for both kinds of cells have been tested and it is observed that the lead based structure is 3.36% more stable than tin based structure. These analysis show that the tin based cell performance is not much lower than the lead based cell. Therefore, by considering the environmental and stability issues, the preferable choice is the tin based perovskite solar cell.