Enhancing photovoltaic performance of antimony sulfide-selenide tandem solar cells through selenium content variation: Modeling and simulation analysis

Abstract

In this study, we utilized simulations and modeling to examine the effect of selenium content on the performance of antimony sulfide-selenide tandem solar cells. By manipulating the thickness and band gap of each sub-cell, we identified the current matching point, which is crucial for achieving equal current levels in both sub-cells. Our results emphasize the significance of maintaining a higher energy band gap in the top cell than in the bottom cell for efficient performance. We observed that an increase in the difference in selenium quantity between the upper and lower cells led to an increase in the efficiency value of the tandem cell, with cell current being the predominant factor governing efficacy. These findings will contribute to the development of more efficient and optimized designs for SbSSe/SbSSe tandem solar cells.