[NH(CH)NH]SnX (X = Br, I): Dion-Jacobson type 2-D perovskites with short interlayer spacing

Two-dimensional tin( ii ) halide perovskites stand as an environmentally benign alternative to Pb( ii ) halide perovskites. However, they are often challenging to make due to the oxidation of Sn( ii ) ion to more stable Sn( iv ) ion. Here we report hybrid tin bromide and iodide perovskites: (1,4-BDA...

Full description

Saved in:
Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2024-02, Vol.53 (6), p.2465-247
Main Authors: Vishwajith, Nagale S, Sharma, Mridul Krishna, Jain, Isha, Vishnoi, Pratap
Format: Article
Language:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two-dimensional tin( ii ) halide perovskites stand as an environmentally benign alternative to Pb( ii ) halide perovskites. However, they are often challenging to make due to the oxidation of Sn( ii ) ion to more stable Sn( iv ) ion. Here we report hybrid tin bromide and iodide perovskites: (1,4-BDA)Sn( iv )Br 6 and (1,4-BDA)Sn( ii )X 4 (where X = Br, I; 1,4-BDA = 1,4-diammoniumbutane) with 0D and 2D structures, respectively. Their synthesis, structural characterization and photophysical properties are reported. They show bandgaps in the 1.94-2.70 eV range. Structurally characterized 2-dimensional perovskites (1,4-BDA)Sn II Br 4 and (1,4-BDA)Sn II I 4 are reported with the interlayer gap of ∼ 10 Å. They are synthesized as phase pure materials in aqueous medium by suppressing the formation of Sn IV impurities.
ISSN:1477-9226
1477-9234
DOI:10.1039/d3dt03772j