Solvent-mediated crystallization of (TMS)2BiBr5·DMSO: a new 0D hybrid halide perovskite

Lead-free hybrid halide perovskites have recently gained enormous research attention because of their excellent optical properties. Herein, we report a novel zero-dimensional (0D) hybrid halide perovskite, (TMS)2BiBr5·DMSO, stabilized by the dimethyl sulfoxide (DMSO) solvent. The structure contains...

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Published inDalton transactions : an international journal of inorganic chemistry Vol. 52; no. 6; pp. 1777 - 1784
Main Authors Das, Suman S, Pradhan, Abinash, Samal, Saroj L
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 07.02.2023
Subjects
Cations
Crystallization
Dimethyl sulfoxide
Emission analysis
Energy gap
Lead free
Optical properties
Perovskites
Polyhedra
Solvents
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Summary:Lead-free hybrid halide perovskites have recently gained enormous research attention because of their excellent optical properties. Herein, we report a novel zero-dimensional (0D) hybrid halide perovskite, (TMS)2BiBr5·DMSO, stabilized by the dimethyl sulfoxide (DMSO) solvent. The structure contains isolated [BiBr5OS(CH3)2]2− anionic polyhedra and the cations [(CH3)3S]+ (trimethyl sulfonium ion, TMS) balance the charge, making it a 0D halide perovskite. Non-interaction of the trans Br atoms (with respect to the Bi–DMSO bond) with the cationic TMS resulted in shorter trans Bi–Br bonds as compared to other Bi–Br bonds in the isolated BiBr5·DMSO polyhedra. The optical properties study reveals that the compound is an indirect band gap type with a band gap of 2.79 eV. From the PL study it is observed that the compound shows emission in the blue region.
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ISSN:1477-9226
1477-9234
DOI:10.1039/d2dt03803j