Photo luminescence from CdS nanocrystals fabricated by sequential ion implantation

被引：11
|
作者：
Kanemitsu, Y
Ando, M
Matsuura, D
Kushida, T
White, CW
机构：
[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan
[2] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA
来源：
JOURNAL OF LUMINESCENCE | 2001年 / 94卷
关键词：
CdS nanocrystal; free exciton; photoluminescence;
D O I：
10.1016/S0022-2313(01)00285-X
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have studied photoluminescence (PL) spectrum and dynamics of CdS nanocrystals fabricated by sequential Cd+ and S (+) ion implantation into Al2O3 matrices. Two peaks related to free excitons of hexagonal CdS are observed in the absorption spectrum at low temperatures, The broad and efficient PL band appears near the absorption edge. The spectral shape of the PL band depends on the excitation laser intensity. Our results show that the observed PL band consists of free-exciton emission and shallow-impurity emission. (C) 2001 Elsevier Science BN. All rights reserved.
引用
收藏
页码：235 / 238
页数：4
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