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Formamidinium Haloplumbate Intermediates: The Missing Link in a Chain of Hybrid Perovskites Crystallization
Chemistry of Materials ( IF 7.2 ) Pub Date : 2020-08-11 , DOI: 10.1021/acs.chemmater.0c02156 Andrey A. Petrov 1, 2 , Sergey A. Fateev 1 , Victor N. Khrustalev 3, 4 , Yumao Li 2 , Pavel V. Dorovatovskii 5 , Yan V. Zubavichus 6 , Eugene A. Goodilin 1, 7 , Alexey B. Tarasov 1, 2
Chemistry of Materials ( IF 7.2 ) Pub Date : 2020-08-11 , DOI: 10.1021/acs.chemmater.0c02156 Andrey A. Petrov 1, 2 , Sergey A. Fateev 1 , Victor N. Khrustalev 3, 4 , Yumao Li 2 , Pavel V. Dorovatovskii 5 , Yan V. Zubavichus 6 , Eugene A. Goodilin 1, 7 , Alexey B. Tarasov 1, 2
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A complete screening of compositions of crystallizing products of hybrid perovskites in the most popular dimethylformamide (DMF)/dimethyl sulfoxide (DMSO) solvents is performed for various cations (FA+/MA+) and anions (I–/Br–). We found four new solvate phases of formamidinium hybrid perovskites, (FA)2Pb3I8·4DMF, FAPbI3·2DMF, (FA)5Pb2I9·0.5DMSO, and even the bromide solvate (FA)2PbBr4·DMSO. These compounds are observed for the first time, and their refined crystal structures showed large cells of unique types dependent on solvent and perovskite compositions. We also monitored crystallization pathways of multicompositional thin films and identified phases that are able to crystallize from mixed cation and anion solutions. Based on the obtained data, we performed a deep analysis of the structural peculiarities of all the solvate phases observed in the screened compositional space and discussed how the solution composition would predetermine the early stages of crystallization of target perovskite films.
中文翻译：
Formamidinium Haloplumbate中间体：杂化钙钛矿结晶链中的缺失环节
结晶混合钙钛矿的产品中最流行的二甲基甲酰胺（DMF）/二甲亚砜（DMSO）溶剂用于各种阳离子进行（FA的组合物的一个完整的筛选+ / MA +（I）和阴离子- /溴- ）。我们发现了甲ami杂钙钛矿的四个新的溶剂化物相，（FA）2 Pb 3 I 8 ·4DMF，FAPbI 3 ·2DMF，（FA）5 Pb 2 I 9 ·0.5DMSO，甚至溴化物溶剂化物（FA）2 PbBr 4·二甲基亚砜。首次观察到这些化合物，其精细的晶体结构显示出取决于溶剂和钙钛矿成分的独特类型的大晶胞。我们还监测了多成分薄膜的结晶途径，并确定了能够从混合的阳离子和阴离子溶液中结晶的相。基于获得的数据，我们对在筛选的组成空间中观察到的所有溶剂化物相的结构特点进行了深入分析，并讨论了溶液组成如何预先确定目标钙钛矿薄膜结晶的早期阶段。
更新日期：2020-09-22
中文翻译：
Formamidinium Haloplumbate中间体：杂化钙钛矿结晶链中的缺失环节
结晶混合钙钛矿的产品中最流行的二甲基甲酰胺（DMF）/二甲亚砜（DMSO）溶剂用于各种阳离子进行（FA的组合物的一个完整的筛选+ / MA +（I）和阴离子- /溴- ）。我们发现了甲ami杂钙钛矿的四个新的溶剂化物相，（FA）2 Pb 3 I 8 ·4DMF，FAPbI 3 ·2DMF，（FA）5 Pb 2 I 9 ·0.5DMSO，甚至溴化物溶剂化物（FA）2 PbBr 4·二甲基亚砜。首次观察到这些化合物，其精细的晶体结构显示出取决于溶剂和钙钛矿成分的独特类型的大晶胞。我们还监测了多成分薄膜的结晶途径，并确定了能够从混合的阳离子和阴离子溶液中结晶的相。基于获得的数据，我们对在筛选的组成空间中观察到的所有溶剂化物相的结构特点进行了深入分析，并讨论了溶液组成如何预先确定目标钙钛矿薄膜结晶的早期阶段。
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