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 journalArticle

27 Citations (Scopus)

Abstract

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
Volume52
Issue number10
DOIs
Publication statusPublished - May 20 2013

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Ionic Liquids
Chalcogenides
n-type semiconductors
chalcogenides
Thermoelectric power
Energy gap
Single crystals
Semiconductor materials
single crystals
liquids

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Semiconducting [(Bi4Te4Br2)(Al 2Cl6-xBrx)]Cl2 and [Bi 2Se2Br](AlCl4) : Cationic chalcogenide frameworks from lewis acidic ionic liquids. / Biswas, Kanishka; Chung, In; Song, Jung Hwan; Malliakas, Christos D.; Freeman, Arthur J.; Kanatzidis, Mercouri G.

In: Inorganic Chemistry, Vol. 52, No. 10, 20.05.2013, p. 5657-5659.

Research output: Contribution to journalArticle

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abstract = "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.",
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AU - Kanatzidis, Mercouri G.

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