AN XPS STUDY OF ISOSTRUCTURAL MULTINARY THALLIUM CHALCOGENIDES

被引：12

作者：

KARLSSON, L ^{[1
]}

KEANE, MP ^{[1
]}

BERGER, R ^{[1
]}

机构：

[1] STATE UNIV GRONINGEN,DEPT APPL SOLID STATE PHYS,9747 AG GRONINGEN,NETHERLANDS

来源：

JOURNAL OF THE LESS-COMMON METALS | 1990年 / 166卷 / 02期

关键词：

D O I：

10.1016/0022-5088(90)90018-F

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The thallium copper chalcogenides TlCu2S2 and TlCu2Se2, as well as the solid solutions TlCu2SeS and TlCu2 - xFexSe2 (x = 0.5 and 1) have been investigated in the form of powders or single crystals by means of X-ray photoelectron spectroscopy. It is concluded from the absence of Cu 2p shake-up satellites that copper is monovalent, as previously suggested on the basis of electrical transport properties. The metallic character of the copper compounds is due to the presence of valence band holes. Indications of chalcogen ordering were found in TlCu2SeS. On extensive iron substitution the compounds became semiconductors. © 1990.

引用

页码：353 / 365

页数：13

共 13 条

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