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

doi:10.1021/ic400782c

Semiconducting [(Bi₄Te₄Br₂)(Al ₂Cl_6-xBr_x)]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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Lewis acidic organic ionic liquids provide a novel synthetic medium to prepare new semiconducting chalcogenides, [(Bi₄Te₄Br ₂)(Al₂Cl_5.46Br_0.54)]Cl₂ (1) and [Bi₂Se₂Br](AlCl₄) (2). Compound 1 features a cationic [(Bi₄Te₄Br₂)(Al ₂Cl_5.46Br_0.54)]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 language	English (US)
Pages (from-to)	5657-5659
Number of pages	3
Journal	Inorganic chemistry
Volume	52
Issue number	10
DOIs	https://doi.org/10.1021/ic400782c
State	Published - May 20 2013

ASJC Scopus subject areas

Inorganic Chemistry
Physical and Theoretical Chemistry

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

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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doi = "10.1021/ic400782c",

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T1 - Semiconducting [(Bi4Te4Br2)(Al 2Cl6-xBrx)]Cl2 and [Bi 2Se2Br](AlCl4)

T2 - Cationic chalcogenide frameworks from lewis acidic ionic liquids

AU - Biswas, Kanishka

AU - Chung, In

AU - Song, Jung Hwan

AU - Malliakas, Christos D.

AU - Freeman, Arthur J.

AU - Kanatzidis, Mercouri G.

PY - 2013/5/20

Y1 - 2013/5/20

N2 - 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.

AB - 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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Semiconducting [(Bi₄Te₄Br₂)(Al ₂Cl_6-xBr_x)]Cl₂ and [Bi ₂Se₂Br](AlCl₄): Cationic chalcogenide frameworks from lewis acidic ionic liquids

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