The rapid rise in efficiencies of lead halide perovskite solar cells has hastened the case for commercialization. One of the key barriers, however, is stability of devices. In this issue of Joule, Zhou et al. studied the degradation mechanism of a FA-Cs mixed cation perovskite-based solar cell with experimental and modeling techniques to show that phase separation into FA-rich and Cs-rich compositions account for the observed degradation.

中文翻译：

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解决卤化钙钛矿的稳定性

卤化钙钛矿型太阳能电池效率的迅速提高加速了商业化。但是，关键障碍之一是设备的稳定性。在本期《焦耳》中，Zhou等人。通过实验和建模技术研究了FA-Cs混合阳离子钙钛矿型太阳能电池的降解机理，结果表明相分离成富含FA和富含Cs的成分是观察到的降解的原因。