Optimization and design strategies for enhancing the efficiency and stability of Cs 2 AgInBr 6 -based perovskite solar cells

Abstract Scientists continually enhance solar cell performance to address the growing energy demand. The SCAPS 1D programming software has been implemented to analyze a perovskite solar cell (PSC) based on inorganic Cs 2 AgInBr 6 . The charge carrier layers, SnS 2 as electron transport layer (ETL) and Zn 3 P 2 as hole transport layer (HTL) are tailored for maximum efficiency, with ideal width of 150 nm and 250 nm, sequentially and the absorber layer width of 600 nm. Some constraints, such as the defect density (N t ), active layer width, and the properties of charge carrier layers, interface defect density, the temperature of FTO/Zn 3 P 2 /Cs 2 AgInBr 6 /SnS 2, and thickness are optimized to improve device performance. This fully inorganic design is chosen for its remarkable stability and high efficiency, achieving a power conversion efficiency (eta) of 27.48%. This research is encouraged by this effort to develop stable and low-toxic PSCs for the solar cell market.