Exceptional Grain Growth in Formamidinium Lead Iodide Perovskite Thin Films Induced by the δ-to-α Phase Transformation,ACS Energy Letters

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Exceptional Grain Growth in Formamidinium Lead Iodide Perovskite Thin Films Induced by the δ-to-α Phase Transformation
ACS Energy Letters ( IF 19.3 ) Pub Date : 2017-11-27 00:00:00 , DOI: 10.1021/acsenergylett.7b01150
Srinivas K. Yadavalli ₁ , Yuanyuan Zhou ₁ , Nitin P. Padture ₁

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The annealing of fine-grained (∼0.175 μm) “yellow” δ-FAPbI₃ nonperovskite thin films at 100 °C in dimethyl sulfoxide vapor for a few minutes results in exceptional grain growth (∼5 μm) induced by their transformation to the desirable “black” α-FAPbI₃ perovskite phase. Mechanistic insights into this unprecedented phenomenon are provided.

中文翻译：

δ-α相变在甲ami碘化钙钛矿型钙钛矿薄膜中的异常生长

细粒（~0.175微米）“黄色”δ-FAPbI的退火_3层nonperovskite薄膜在100℃下在二甲亚砜蒸气用于诱导可以通过变换到所希望的特殊晶粒生长（〜5微米）几分钟结果“黑”α-FAPbI ₃钙钛矿相。提供了对这种史无前例的现象的机械洞察力。

更新日期：2017-11-27

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