Halide perovskite solar cells (PSCs) have become a representative of novel photovoltaic power generation technologies. However, the toxicity and instability problems of lead (Pb) halide perovskite constitute a major obstacle to their commercialization. In recent years, a nontoxic, highly stable lead-free double perovskite Cs₂AgBiBr₆ cells emerged as a promising alternative to Pb-based PSCs, which is quickly becoming one of the hottest topics in photovoltaics. This review identifies the major challenges faced by Cs₂AgBiBr₆ PSCs and provides a comprehensive review on corresponding solution strategies for the community. These results will contribute insights and theoretical guidance to the subsequent development of Cs₂AgBiBr₆ PSCs. Finally, we propose research perspectives toward efficient, eco-friendly, and practical photovoltaic Cs₂AgBiBr₆ PSCs.

卤化物钙钛矿太阳能电池（PSC）已成为新型光伏发电技术的代表。然而，卤化铅钙钛矿的毒性和不稳定性问题构成了其商业化的主要障碍。近年来，一种无毒、高度稳定的无铅双钙钛矿 Cs ₂ AgBiBr ₆电池成为 Pb 基 PSC 的有前途的替代品，并迅速成为光伏领域最热门的话题之一。_{本综述确定了 Cs 2} AgBiBr ₆ PSC面临的主要挑战，并对社区的相应解决方案策略进行了全面回顾。_{这些结果将为Cs 2}的后续发展贡献见解和理论指导。AgBiBr ₆ PSC。最后，我们提出了对高效、环保和实用的光伏 Cs ₂ AgBiBr ₆ PSC 的研究观点。