A lead-free bismuth iodide organic-inorganic ferroelectric semiconductor

Organic-inorganic metal halide ferroelectric semiconductors are mainly lead halide ones, suffering from the presence of toxic lead. Herein, we report a lead-free bismuth iodide ferroelectric semiconductor [1,4-butanediammonium]BiI 5 , showing a high Curie temperature of 365 K and a small band gap of...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-01, Vol.57 (5), p.647-65
Main Authors: Liu, Yu-Hua, Peng, Hang, Liao, Wei-Qiang
Format: Article
Language:English
Subjects:
Bismuth
Crystallography
Curie temperature
Ferroelectric materials
Ferroelectricity
Lead compounds
Lead free
Metal halides
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Summary:Organic-inorganic metal halide ferroelectric semiconductors are mainly lead halide ones, suffering from the presence of toxic lead. Herein, we report a lead-free bismuth iodide ferroelectric semiconductor [1,4-butanediammonium]BiI 5 , showing a high Curie temperature of 365 K and a small band gap of 1.95 eV, smaller than those of most lead halide counterparts. [1,4-butanediammonium]BiI 5 is a lead-free organic-inorganic ferroelectric semiconductor showing a high Curie temperature and a small band gap.
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc07443h