Optical characterization of Er-implanted ZnO films formed by sol-gel method

被引:24
作者
Fukudome, T [1 ]
Kaminaka, A [1 ]
Isshiki, H [1 ]
Saito, R [1 ]
Yugo, S [1 ]
Kimura, T [1 ]
机构
[1] Univ Electrocommun, Dept Elect Engn, Chofu, Tokyo 1828585, Japan
关键词
ZnO; Er; sol-gel; implantation; photoluminescence;
D O I
10.1016/S0168-583X(03)00746-8
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
In this paper, we report on the 1.54 mum photoluminescence (PL) of Er-implanted ZnO thin films formed by a sol-gel method on Si substrates. In spite of the polycrystalline structure of the sol-gel ZnO thin films, they showed strong PL emissions due to the near band edge recombination at 375 nm as well as the Er-related luminescence at 1.54 mum. The Er-related luminescence showed no decrease (quench) in the intensity up to the Er concentration of 1.5 x 10(21) cm(-3). The PL intensity of Er-implanted ZnO at 1.54 mum was found to be as strong as Er-doped PS (porous Si) at 20 K, and the intensity reduced to 1/3 at room temperature. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:287 / 290
页数:4
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