Photoluminescence spectra of ZnO particles embedded in thin alkali halide crystals

被引：23

作者：

Harada, Y ^{[1
]}

Kondo, H

Ichimura, N

Hashimoto, S

机构：

[1] Osaka Inst Technol, Osaka 5358585, Japan

[2] Ehime Univ, Fac Sci, Dept Phys, Matsuyama, Ehime 7908577, Japan

[3] Osaka Univ, Grad Sch Sci, Dept Phys, Toyonaka, Osaka 5600043, Japan

[4] Kyoto Univ Educ, Dept Phys, Kyoto 6128522, Japan

来源：

JOURNAL OF LUMINESCENCE | 2000年 / 87-9卷

关键词：

ZnO particle; alkali halide; photoluminescence; excitons;

D O I：

10.1016/S0022-2313(99)00422-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Sample specimens of ZnO particles embedded in thin alkali halide crystals (KI, KBr and KCl) have been prepared from their melts and photoluminescence spectra have been measured at low temperature. In cases of Ki and KBr matrices, a bound exciton and a free exciton emission line appear clearly, and in KCl matrix, the emission lines are very sharp in comparison with the other cases. The sharpest lines in KCl matrix are only obtained during the time of a few minutes. The particles are kept in the melt above the melting temperature. These facts suggest that the use of the alkali halide melt and rapid solidification of the melt result in a proper etching of the particle surface. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：405 / 407

页数：3