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Zero-Dimensional Hybrid Organic-Inorganic Lead Halides and Their Post-Synthesis Reversible Transformation into Three-Dimensional Perovskites.

ABSTRACT: Zero-dimensional (0D) mixed-halide hybrid organic-inorganic MA4PbX6·2H2O (MA = CH3NH3+; X = Br1 - xIx 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 MAPbX3 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 Cs4PbX6 compounds.

SUBMITTER: Huisman BAH 

PROVIDER: S-EPMC9682476 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Zero-Dimensional Hybrid Organic-Inorganic Lead Halides and Their Post-Synthesis Reversible Transformation into Three-Dimensional Perovskites.

Huisman Bas A H BAH   Palazon Francisco F   Bolink Henk J HJ  

Inorganic chemistry 20210311 7

Zero-dimensional (0D) mixed-halide hybrid organic-inorganic MA<sub>4</sub>PbX<sub>6</sub>·2H<sub>2</sub>O (MA = CH<sub>3</sub>NH<sub>3</sub><sup>+</sup>; X = Br<sub>1 - <i>x</i></sub>I<i><sub>x</sub></i> with 0 < <i>x</i> < 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<sub>3</sub> by  ...[more]

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