Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 24, Issue 8, Pages 1811-1815Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201705682
Keywords
inorganic halide perovskites; mechanochemistry; post-synthetic transformation; solid-state synthesis; structure
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Funding
- Sheikh Saqr Laboratory, JNCASR
- National Postdoctoral Fellowship, SERB [PDF/2016/001790]
- INSPIRE
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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 CsPbBr3, 2D CsPb2Br5, 0D Cs4PbBr6, 3D CsPbCl3, 2D CsPb2Cl5, 0D Cs4PbCl6, 3D CsPbI3, and 3D RbPbI3 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 PbX2 (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.
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