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All‐Solid‐State Mechanochemical Synthesis and Post‐Synthetic Transformation of Inorganic Perovskite‐type Halides
Author(s) -
Pal Provas,
Saha Sujoy,
Banik Ananya,
Sarkar Arka,
Biswas Kanishka
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201705682
Subject(s) - halide , perovskite (structure) , chemistry , stoichiometry , solid state , solvent , inorganic chemistry , chemical engineering , crystallography , organic chemistry , engineering
All‐inorganic and hybrid perovskite type halides are generally synthesized by solution‐based methods, with the help of long chain organic capping ligands, complex organometallic precursors, and high boiling organic solvents. Herein, a room temperature, solvent‐free, general, and scalable all‐solid‐state mechanochemical synthesis is demonstrated for different inorganic perovskite type halides, with versatile structural connectivity in three (3D), two (2D), and zero (0D) dimensions. 3D CsPbBr 3 , 2D CsPb 2 Br 5 , 0D Cs 4 PbBr 6 , 3D CsPbCl 3 , 2D CsPb 2 Cl 5 , 0D Cs 4 PbCl 6 , 3D CsPbI 3 , and 3D RbPbI 3 have all been synthesized by this method. The all‐solid‐state synthesis is materialized through an inorganic retrosynthetic approach, which directs the decision on the solid‐state precursors (e.g., CsX and PbX 2 (X=Cl/Br/I) with desired stoichiometric ratios. Moreover, post‐synthetic structural transformations from 3D to 2D and 0D perovskite halides were performed by the same mechanochemical synthetic approach at room temperature.