Synthesis and characterization of a new quaternary selenide Sr3GeSb2Se8

Ching Yi Yu; Ming Fang Wang; Ming Yang Chung; Shyue Ming Jang; Jih Chen Huang; Chi-Shen Lee

doi:10.1016/j.solidstatesciences.2007.12.010

Synthesis and characterization of a new quaternary selenide Sr₃GeSb₂Se₈

Ching Yi Yu, Ming Fang Wang, Ming Yang Chung, Shyue Ming Jang, Jih Chen Huang, Chi-Shen Lee^*

^*Corresponding author for this work

Department of Applied Chemistry

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

15 Scopus citations

Abstract

A new quaternary selenide Sr₃GeSb₂Se₈ has been synthesized at 750 °C from pure elements in a stoichiometric ratio under vacuum. The product as-synthesized is characterized by single-crystal X-ray diffraction, diffuse reflectance spectroscopy, and thermoanalysis. The title compound crystallizes in the orthorhombic space group Pnma with a = 12.633(4) Å, b = 4.301(1) Å, c = 28.693(7) Å, V = 1558.8(8) Å³, Z = 4, R₁/wR₂ = 0.0582/0.1221, and GOF = 1.077. The structure of Sr₃GeSb₂Se₈ features a new structural type that consists of one-dimensional chains of vertex-sharing tetrahedra _∞¹[MSe₃] (M = Ge/Sb) and fused double chains of edge-shared square pyramids _∞¹[M₂ Se₅], which are held together by Sr²⁺ ions. A band gap of 0.75 eV for Sr₃GeSb₂Se₈ was derived from its diffuse reflectance spectrum.

Original language	English
Pages (from-to)	1145-1149
Number of pages	5
Journal	Solid State Sciences
Volume	10
Issue number	9
DOIs	https://doi.org/10.1016/j.solidstatesciences.2007.12.010
State	Published - Sep 2008

Keywords

Antimony
Crystal structure
Germanium
Selenium
Semiconductor
Solid-state synthesis

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10.1016/j.solidstatesciences.2007.12.010

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title = "Synthesis and characterization of a new quaternary selenide Sr3GeSb2Se8",

abstract = "A new quaternary selenide Sr3GeSb2Se8 has been synthesized at 750 °C from pure elements in a stoichiometric ratio under vacuum. The product as-synthesized is characterized by single-crystal X-ray diffraction, diffuse reflectance spectroscopy, and thermoanalysis. The title compound crystallizes in the orthorhombic space group Pnma with a = 12.633(4) {\AA}, b = 4.301(1) {\AA}, c = 28.693(7) {\AA}, V = 1558.8(8) {\AA}3, Z = 4, R1/wR2 = 0.0582/0.1221, and GOF = 1.077. The structure of Sr3GeSb2Se8 features a new structural type that consists of one-dimensional chains of vertex-sharing tetrahedra ∞1[MSe3] (M = Ge/Sb) and fused double chains of edge-shared square pyramids ∞1[M2 Se5], which are held together by Sr2+ ions. A band gap of 0.75 eV for Sr3GeSb2Se8 was derived from its diffuse reflectance spectrum.",

keywords = "Antimony, Crystal structure, Germanium, Selenium, Semiconductor, Solid-state synthesis",

author = "Yu, {Ching Yi} and Wang, {Ming Fang} and Chung, {Ming Yang} and Jang, {Shyue Ming} and Huang, {Jih Chen} and Chi-Shen Lee",

year = "2008",

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doi = "10.1016/j.solidstatesciences.2007.12.010",

language = "English",

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AU - Yu, Ching Yi

AU - Wang, Ming Fang

AU - Chung, Ming Yang

AU - Jang, Shyue Ming

AU - Huang, Jih Chen

AU - Lee, Chi-Shen

PY - 2008/9

Y1 - 2008/9

N2 - A new quaternary selenide Sr3GeSb2Se8 has been synthesized at 750 °C from pure elements in a stoichiometric ratio under vacuum. The product as-synthesized is characterized by single-crystal X-ray diffraction, diffuse reflectance spectroscopy, and thermoanalysis. The title compound crystallizes in the orthorhombic space group Pnma with a = 12.633(4) Å, b = 4.301(1) Å, c = 28.693(7) Å, V = 1558.8(8) Å3, Z = 4, R1/wR2 = 0.0582/0.1221, and GOF = 1.077. The structure of Sr3GeSb2Se8 features a new structural type that consists of one-dimensional chains of vertex-sharing tetrahedra ∞1[MSe3] (M = Ge/Sb) and fused double chains of edge-shared square pyramids ∞1[M2 Se5], which are held together by Sr2+ ions. A band gap of 0.75 eV for Sr3GeSb2Se8 was derived from its diffuse reflectance spectrum.

AB - A new quaternary selenide Sr3GeSb2Se8 has been synthesized at 750 °C from pure elements in a stoichiometric ratio under vacuum. The product as-synthesized is characterized by single-crystal X-ray diffraction, diffuse reflectance spectroscopy, and thermoanalysis. The title compound crystallizes in the orthorhombic space group Pnma with a = 12.633(4) Å, b = 4.301(1) Å, c = 28.693(7) Å, V = 1558.8(8) Å3, Z = 4, R1/wR2 = 0.0582/0.1221, and GOF = 1.077. The structure of Sr3GeSb2Se8 features a new structural type that consists of one-dimensional chains of vertex-sharing tetrahedra ∞1[MSe3] (M = Ge/Sb) and fused double chains of edge-shared square pyramids ∞1[M2 Se5], which are held together by Sr2+ ions. A band gap of 0.75 eV for Sr3GeSb2Se8 was derived from its diffuse reflectance spectrum.

KW - Antimony

KW - Crystal structure

KW - Germanium

KW - Selenium

KW - Semiconductor

KW - Solid-state synthesis

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M3 - Article

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EP - 1149

JO - Solid State Sciences

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ER -

Synthesis and characterization of a new quaternary selenide Sr₃GeSb₂Se₈

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