Optical and electrical properties of ZnO films, codoped with Al and Ga deposited at room temperature by an RF sputtering method

被引:21
作者
Kim, Jong-Pil [1 ]
Bae, Jong-Seong [1 ]
Hong, Tae-Eun [1 ]
Won, Mi-Sook [1 ]
Yoon, Jang-Hee [1 ]
Lee, Byoung-Seob [1 ]
Lee, Haeng-Jung [1 ]
机构
[1] Korea Basic Sci Inst Susan Ctr, Surface Properties Res Team, Pusan 609735, South Korea
关键词
Codoping Al and Ga-doped ZnO; Band gap energy; Working pressure; Resistivity; THIN-FILMS;
D O I
10.1016/j.tsf.2010.04.050
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
ZnO thin films, codoped with Al and Ga, were prepared on fused quartz (FQ) and cyclo-olefin polymer (COP) substrates using a radial frequency magnetron sputtering technique at room temperature, without the introducing of oxygen. The elemental distributions of Al, Ga, Zn and O throughout the films were found and no compositional variation in working pressure was observed. A resistivity of 0.03-4.07 Omega cm in AGZ/FQ films (Fig. 2b and 0.04-5.73 Omega cm in AGZ/COP films as well as a transmittance of above 85% were obtained by appropriate control of the working pressure. Compared with the band gap energy of single crystal ZnO, the band gap energy of the AGZ/FQ thin film was somewhat higher. The band gap energy of the AGZ/FQ films showed a tendency to increase with the working pressure employed. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:6179 / 6183
页数:5
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