Perovskite intermediate phases fundamentally address the urgent stability issue
作者单位：CAS Key Laboratory of Nanosystem and Hierachical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology University of Chinese Academy of Sciences
会议名称：《第九届新型太阳能材料科学与技术学术研讨会》
会议日期：2022年
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
关 键 词：perovskite intermediate phases stability
摘 要：Although halide hybrid perovskite solar cells have been rapidly developed, their commercial implementation still needs to overcome the inevitable stability issue. Recently in Chem, Nan et al. discovered a key intermediate of 8 H phase which helps elucidate the complete phase evolution and stabilization mechanism of formamidinium-based perovskite. We further preview this recent finding on the phase evolution and stabilization mechanism of FA-based 3 D perovskites. On this basis, we also point out that a highly efficient and stable solar cell has been achieved by rationally controlling the factors such as composition, stoichiometry, additives, and precursor solution.