Formamidinium Haloplumbate Intermediates: The Missing Link in a Chain of Hybrid Perovskites Crystallization

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. Copyright © 2020 American Chemical Society.

Авторы
Petrov A.A. 1, 4 , Fateev S.A.1 , Khrustalev V.N. 2, 3 , Li Y. 4 , Dorovatovskii P.V. 5 , Zubavichus Y.V. 6 , Goodilin E.A.1, 7 , Tarasov A.B.1, 4
Журнал
Издательство
American Chemical Society
Номер выпуска
18
Язык
Английский
Страницы
7739-7745
Статус
Опубликовано
Том
32
Год
2020
Организации
  • 1 Laboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, Moscow, 119991, Russian Federation
  • 2 Inorganic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklay, Moscow, 117198, Russian Federation
  • 3 N.D. Zelinsky Institute of Organic Chemistry of Russian Academy of Sciences, 47 Leninsky Prosp., Moscow, 119991, Russian Federation
  • 4 Faculty of Materials Science, Shenzhen MSU-BIT University, Ruyi Road, 299, Shenzhen, Longgang District, 517182, China
  • 5 National Research Centre Kurchatov Institute, 1 Acad. Kurchatov Sq., Moscow, 123182, Russian Federation
  • 6 Federal Research Center Boreskov Institute of Catalysis, Lavrentiev Ave. 5, Novosibirsk, 630090, Russian Federation
  • 7 Department of Chemistry, Lomonosov Moscow State University, 1 Lenin Hills, Moscow, 119991, Russian Federation
Ключевые слова
Dimethyl sulfoxide; Dimethylformamide; Negative ions; Organic solvents; Positive ions; Anion solutions; Crystallization pathway; Mixed cations; Perovskite films; Solution composition; Structural peculiarities; Perovskite
Дата создания
02.11.2020
Дата изменения
02.11.2020
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/64390/
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