Enhanced Photovoltaic Performance of Lead‐Free Perovskite Solar Cells With Volatilizable Solvent
Tin‐based perovskite solar cells (Sn‐PSCs) represent the most efficient lead‐free alternative to conventional lead‐halide PSCs, but their performance is limited by rapid crystallization and poor film morphology. Here, we introduce ethyl propyl sulfide (EPS) as a multifunctional volatile additive to modulate the formati...