(HPy) 2 (Py)CuBi 3 I 12 , a low bandgap metal halide photoconductor

Bismuth halides represent an emergent class of materials that combines semiconductor properties with non-toxic constituents. However, many simple bismuth halide compounds feature bandgaps that are significantly higher than those of the lead halide perovskites, which they are supposed to replace. One...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2020-10, Vol.49 (41), p.14397-14400
Main Authors: Möbs, Jakob, Gerhard, Marina, Heine, Johanna
Format: Article
Language:English
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Summary:Bismuth halides represent an emergent class of materials that combines semiconductor properties with non-toxic constituents. However, many simple bismuth halide compounds feature bandgaps that are significantly higher than those of the lead halide perovskites, which they are supposed to replace. One way to address this issue is the preparation of multinary metal halide materials that feature an additional metal ion. Here, we report on the synthesis and properties of (HPy) 2 (Py)CuBi 3 I 12 ( 1 ) a new copper iodido bismuthate, a photoconductor, which shows a low band gap of 1.59 eV and good thermal and air stability.
ISSN:1477-9226
1477-9234
DOI:10.1039/D0DT03427D