ProspectiveCaSnS3/Si tandem solar cell: Assessing material aspect and quantifying temperature-induced efficiency losses
Abstract
The selection of appropriate perovskite top cell material for a perovskite/Si tandem device is always critical. CaSnS3, a Sn-based perovskite suits for top cell because it has a ~1.74 eV bandgap and contains Sn4+, which lowers Sn oxidation. When temperature is taken into consideration through bandgap renormalization, CaSnS3 ~