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

页码：1859 / 1862

页数：4

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