Semiconducting [(Bi4Te4Br2)(Al2Cl6-xBrx)]Cl-2 and [Bi2Se2Br](AlCl4): Cationic Chalcogenide Frameworks from Lewis Acidic Ionic Liquids

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Lewis acidic organic ionic liquids provide a novel synthetic medium to prepare new semiconducting chalcogenides, [(Bi4Te4Br2)(Al2Cl5.46Br0.54)]Cl-2 (1) and [Bi2Se2Br](AlCl4) (2). Compound 1 features a cationic [(Bi4Te4Br2)(Al2Cl5.46Br0.54)](2+) three-dimensional framework, while compound 2 consists of cationic layers of [Bi2Se2Br](2+). Spectroscopically measured band gaps of 1 and 2 are similar to 0.6 and similar to 1.2 eV, respectively. Thermoelectric power measurements of single crystals of 1 indicate an n-type semiconductor.
Publisher
AMER CHEMICAL SOC
Issue Date
2013-05
Language
English
Article Type
Article
Citation

INORGANIC CHEMISTRY, v.52, no.10, pp.5657 - 5659

ISSN
0020-1669
DOI
10.1021/ic400782c
URI
http://hdl.handle.net/10203/174216
Appears in Collection
NT-Journal Papers(저널논문)
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