Effects of Oxygen Vacancy on Optical and Electrical Properties of ZnO Bulks and Nanowires
Effects of Oxygen Vacancy on Optical and Electrical Properties of ZnO Bulks and Nanowires
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DOI:
10.1088/0256-307x/31/11/117301
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发表时间:
2014-11
影响因子:
3.5
通讯作者:
曹茂盛
中科院分区:
文献类型:
--
作者:
ZHENG HM;FANG XY;JIN HB;曹茂盛
Based on the generalized gradient approximation (GGA) in density functional theory (DFT) and using the first-principle plane wave ultrasoft pseudopotential method, we construct and optimize the structures of intrinsic and oxygen vacancy (VO) ZnO bulks and nanowires (NWs) in the Castep module. Moreover, the calculation of band structures and the optical properties are carried out. The calculated results exhibit that the oxygen vacancy exerts a more significant influence on the electronic structures of the ZnO bulks instead of the NWs. What is more, the influences of the VO on the optical properties are mainly embodied in the ultraviolet region, and the main optical parameters of ZnO bulks and NWs with VO are anisotropic.
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