Luminescence of Copper-Doped Pyrolytic Cd0.5Zn0.5S Films

被引：4
|
作者：
Samofalova, T. V. [1 ]
Semenov, V. N. [1 ]
Klyuev, V. G. [1 ]
Takmakova, E. V. [1 ]
Bezdetko, Yu. S. [1 ]
机构：
[1] Voronezh State Univ, Voronezh 394006, Russia
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2014年 / 81卷 / 01期
关键词：
aerosol spray pyrolysis method; pyrolytic film; solid solutions of cadmium-zinc sulfides; optical spectra of semiconductors; photoluminescence; luminescence center;
D O I：
10.1007/s10812-014-9891-z
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
We present the results of a study of Cd0.5Zn0.5S films obtained from thiourea coordination compounds (complexes) of cadmium and zinc bromides, doped with copper ions in a concentration of 10(-5) and 10(-4) at.%. Films formed at 400A degrees C have a wurtzite lattice. The bandgap widths for the pure and doped films, obtained from the reflectance spectra near the fundamental absorption edge, are equal to 3.17 A +/- 0.1 eV. An up to 10-fold increase in luminescence intensity was detected for the copper-doped films. We propose a structure for the luminescence centers of copperdoped Cd0.5Zn0.5S films and a mechanism for the increase in luminescence intensity for the copper-doped films.
引用
收藏
页码：87 / 91
页数：5
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