The halide perovskite material has excellent photoelectric properties and is one of the research hotspots of solar cells. However, this kind of solar cell generally faces the problems of the toxic element lead and poor stability of small organic molecules in perovskite material, which greatly hindered the commercial application of perovskite solar cells. Therefore, it is imperative to develop new and efficient lead-free perovskite with high stability. Lead-free cesium-containing halide perovskite uses Sn, Bi, Ag, or other metals to replace toxic lead and uses cesium to replace unstable small organic molecules in the conventional halide perovskite, which can effectively solve the toxicity and stability of halogenated perovskite. In this article, the latest research and progress of environment-friendly lead-free cesium-containing halide perovskite as well as its application in solar cells, including CsSnX ₃ , CsGeX ₃ , CsSb ₂ X ₉ , CsBi ₂ X ₉ , Cs ₂ AgBiX ₆ , Cs ₂ SnI ₆ , and Cs ₂ TiI ₆ , are comprehensively summarized, and the future development of the lead-free cesium-containing halide perovskite is prospected, which could provide guidance for the design and development of environmental friendly and stable perovskite-based solar cells in the future.

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无铅含铯卤化物钙钛矿及其在太阳能电池中的应用

卤化物钙钛矿材料具有优异的光电性能，是太阳能电池的研究热点之一。然而，这种太阳能电池普遍面临钙钛矿材料中有毒元素铅和有机小分子稳定性差的问题，极大地阻碍了钙钛矿太阳能电池的商业化应用。因此，开发新型高效、稳定性高的无铅钙钛矿势在必行。无铅含铯卤化钙钛矿用Sn、Bi、Ag等金属代替有毒的铅，用铯代替常规卤化钙钛矿中不稳定的有机小分子，可有效解决卤化钙钛矿的毒性和稳定性问题。在这篇文章中， ₃ 、CsGeX ₃ 、CsSb ₂ X ₉ 、CsBi ₂ X ₉ 、Cs ₂ AgBiX ₆ 、Cs ₂ SnI ₆ 、Cs ₂ TiI ₆ ，综合总结，无铅含铯卤化物钙钛矿的未来发展方向展望，可为未来环境友好且稳定的钙钛矿基太阳能电池的设计和开发提供指导。