Syntheses, structures, and optical properties of Ba4MInSe6 (M=Cu, Ag)

被引:5
作者
Yin, Wenlong [1 ,2 ,3 ]
Feng, Kai [1 ,2 ,3 ]
Hao, Wenyu [1 ,2 ,3 ]
Yao, Jiyong [1 ,2 ]
Wu, Yicheng [1 ,2 ]
机构
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Ctr Crystal Res & Dev, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
Ba4MInSe6; (M; Cu; Ag); Synthesis; Crystal structure; Optical property; PHYSICAL-PROPERTIES; CRYSTAL-STRUCTURE; ELECTRONIC-STRUCTURES; QUATERNARY; SULFIDES; EARTH; CHALCOGENIDE; GD; SM; LN;
D O I
10.1016/j.jssc.2012.03.068
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Two new quaternary chalcogenides, namely Ba4MInSe6 (M=Cu, Ag), were synthesized by solid state reactions. These two isostructural compounds adopt the Ba2MnS3 structure type in the orthorhombic space group Pnma. In the structure, the M and In atoms randomly occupy one crystallographic unique metal position with the molar ratio of 1:1 The (M/In)Se-4 tetrahedra are connected to each other by corner-sharing to form one-dimensional chains along the b direction, which are separated by mono-capped trigonal prismatically coordinated Ba atoms. Based on the diffuse reflectance spectrum, the optical band gaps were determined to be 2.23(2) and 2.41(2) eV for Ba4CuInSe6 and Ba4AgInSe6, respectively. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码:168 / 171
页数:4
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