Solution Processing of Methylammonium Lead Iodide Perovskite from γ-Butyrolactone: Crystallization Mediated by Solvation Equilibrium

The chemical origin of solvents typically used for preparation of hybrid lead halide perovskites - dimethyl sulfoxide (DMSO), dimethylformamide (DMF), and γ-butyrolactone (GBL) - strongly influences the process of perovskite crystallization because of the formation of intermediate adducts with different structures and morphology. The composition and crystal structures of the adducts depend on the coordination and binding ability of the solvents and the ratio of the precursors. New adducts of perovskite and GBL with either an unusual cluster structure, (MA)8(GBL)x[Pb18I44], or an adduct, (MA)2(GBL)2Pb3I8, similar to those observed for DMF and DMSO are described for the first time. Complex equilibriums between chemical species existing in perovskite solutions are revealed by Raman spectroscopy. As a result, new features of the perovskite crystallization through intermediate adduct phases are discussed, and effective perovskite deposition pathways are suggested. © 2018 American Chemical Society.

Authors
Fateev S.A.1 , Petrov A.A. 1 , Khrustalev V.N. 2, 3 , Dorovatovskii P.V.3 , Zubavichus Y.V.3 , Goodilin E.A.1, 4 , Tarasov A.B.1
Journal
Chemistry of Materials
Publisher
American Chemical Society
Number of issue
15
Language
English
Pages
5237-5244
Status
Published
Link
External link
DOI
10.1021/acs.chemmater.8b01906
Volume
30
Year
2018
Organizations
  • 1 Laboratory of New Materials for Solar Energetics, Department 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 National Research Centre, Kurchatov Institute, 1 Acad. Kurchatov Sq., Moscow, 123182, Russian Federation
  • 4 Department of Chemistry, Lomonosov Moscow State University, 1 Lenin Hills, Moscow, 119991, Russian Federation
Keywords
Dimethyl sulfoxide; Dimethylformamide; Iodine compounds; Layered semiconductors; Organic solvents; Perovskite; Binding abilities; Cluster structure; Different structure; Dimethyl sulfoxide (DMSO); Gamma butyrolactone; Halide perovskites; Solution-processing; Solvation equilibrium; Lead compounds
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/6458/
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