Journal
INORGANIC CHEMISTRY
Volume 52, Issue 10, Pages 5657-5659Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic400782c
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Funding
- National Science Foundation [DMR-1104965]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1104965] Funding Source: National Science Foundation
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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.
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