Open AccessZero-Dimensional Hybrid Organic–Inorganic Lead Halides and Their Post-Synthesis Reversible Transformation into Three-Dimensional Perovskites
Author(s) -
Bas A. H. Huisman,
Francisco Palazón,
Henk J. Bolink
Publication year - 2021
Publication title -
inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 233
eISSN - 1520-510X
pISSN - 0020-1669
DOI - 10.1021/acs.inorgchem.1c00212
Subject(s) - chemistry , halide , perovskite (structure) , inorganic chemistry , metal halides , phase (matter) , annealing (glass) , hybrid material , solvent , crystallography , organic chemistry , thermodynamics , physics
Zero-dimensional (0D) mixed-halide hybrid organic-inorganic MA 4 PbX 6 ·2H 2 O (MA = CH 3 NH 3 + ; X = Br 1 - x I x with 0 < x < 1) has been synthesized by a solvent-free mechanochemical approach. It has been shown that this 0D phase with sharp absorption features in the near-UV is a hydrated structure, which can be reversibly transformed into the three-dimensional perovskite phase MAPbX 3 by simple thermal annealing (dehydration) in air. This work reveals a new approach to hybrid organic-inorganic perovskites and related 0D structures, which have so far only been thoroughly studied for the inorganic Cs 4 PbX 6 compounds.