Phase relations and optical properties of semiconducting ternary sulfides in the system Cu-Sn-S

被引：132
|
作者：
Fiechter, S [1 ]
Martinez, M [1 ]
Schmidt, G [1 ]
Henrion, W [1 ]
Tomm, Y [1 ]
机构：
[1] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2003年 / 64卷 / 9-10期
关键词：
chalcogenides; differential scanning calorimetry; X-ray diffraction; dielectric properties; semiconductivity;
D O I：
10.1016/S0022-3697(03)00172-0
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The ternary system Cu-Sn-S was re-investigated and the phase diagram Cu2S-SnS2 studied in detail by differential thermal analysis and X-ray diffractometry. Three phases of composition Cu4SnS4, Cu2SnS3 and Cu2Sn3+xS7+2x(0 less than or equal to x less than or equal to 1) were found exhibiting melting points at 833, 856 and 803 degreesC, respectively. Ellipsometric and diffuse reflectance measurements revealed that the latter two sulfides possess a fundamental band gap of 0.93 eV followed by a higher transitions. For the first time it could be demonstrated that Cu2Sn3S7 has semiconducting properties and an absorption coefficients of the order 10(5) cm(-1). (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1859 / 1862
页数：4
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