Semiconducting [(Bi4Te4Br2)(Al 2Cl6-xBrx)]Cl2 and [Bi 2Se2Br](AlCl4): Cationic chalcogenide frameworks from lewis acidic ionic liquids

Kanishka Biswas, In Chung, Jung Hwan Song, Christos D. Malliakas, Arthur J. Freeman, Mercouri G. Kanatzidis

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


Lewis acidic organic ionic liquids provide a novel synthetic medium to prepare new semiconducting chalcogenides, [(Bi4Te4Br 2)(Al2Cl5.46Br0.54)]Cl2 (1) and [Bi2Se2Br](AlCl4) (2). Compound 1 features a cationic [(Bi4Te4Br2)(Al 2Cl5.46Br0.54)]2+ three-dimensional framework, while compound 2 consists of cationic layers of [Bi 2Se2Br]2+. Spectroscopically measured band gaps of 1 and 2 are ∼0.6 and ∼1.2 eV, respectively. Thermoelectric power measurements of single crystals of 1 indicate an n-type semiconductor.

Original languageEnglish
Pages (from-to)5657-5659
Number of pages3
JournalInorganic Chemistry
Issue number10
Publication statusPublished - May 20 2013

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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