Optical and electrical properties of p-type ZnO fabricated by NH3 plasma post-treated ZnO thin films

被引:51
作者
Cao, P. [1 ,2 ]
Zhao, D. X. [1 ]
Zhang, J. Y. [1 ]
Shen, D. Z. [1 ]
Lu, Y. M. [1 ]
Yao, B. [1 ]
Li, B. H. [1 ]
Bai, Y. [3 ]
Fan, X. W. [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China
[3] Chinese Acad Sci, Changchun Inst Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China
关键词
p-type ZnO; nitrogen doping; NH3; plasma;
D O I
10.1016/j.apsusc.2007.10.056
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
In this paper, a simple method is reported to obtain nitrogen-doped p-ZnO film. In this method NH3 plasma, generated in a plasma-enhanced chemical vapor deposition system, was employed to treat ZnO thin film. By Hall-effect measurement, a p-type conductivity was observed for the treated film with the hole density of 2.2 x 10(16) cm(-3). X- ray photoelectron spectroscopy (XPS) results confirmed that nitrogen was incorporated into ZnO film during the treatment process to occupy the oxygen positions. In low temperature photoluminescence spectra, an emission peak corresponding to acceptor - donor pair was observed. From this emission peak we calculated the N-related acceptor binding energy to be 130 meV. (c) 2007 Elsevier B. V. All rights reserved.
引用
收藏
页码:2900 / 2904
页数:5
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