Tin Halide Perovskite (ASnX₃) Solar Cells: A Comprehensive Guide toward the Highest Power Conversion Efficiency

Abstract

Abstract ASnX 3 perovskite solar cells (Sn‐PSC) have the potential to deliver the most efficient solar cell technology with safe materials. In this review, a comprehensive introduction of the field is given, that is suitable for nonexperts, gradually leading the reader to a narrower and detailed analysis of the most recent and significant advances. A brief description is given of the leading alternatives for lead‐free PSC and the reasons for ASnX 3 compounds' status as one of the most promising candidates are presented. The last part of the review focuses on the stabilization of ASnX 3 , which is the most compelling challenge to achieve the highest efficiency PSCs. The most promising approaches toward stable and efficient ASnX 3 PSCs are identified and discussed.