UV-blocking ZnO nanostructure anti-reflective coatings

被引:12
作者
Du, Qing Guo [1 ,2 ]
Alagappan, G. [2 ]
Dai, Haitao [1 ]
Demir, H. V. [1 ]
Yu, H. Y. [1 ]
Sun, Xiao Wei [1 ]
Kam, Chan Hin [1 ]
机构
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[2] Inst High Performance Comp, Singapore 138632, Singapore
关键词
Nanowires; Nanoholes; UV blocking; Anti-reflective; OPTICAL-PROPERTIES; SEMICONDUCTORS; DESIGN; FILMS; TCO;
D O I
10.1016/j.optcom.2012.02.095
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, we apply finite difference time domain simulation to determine the absorptance and reflectance of ZnO nanowire and nanohole array structures for an efficient UV-blocking anti-reflective coating. Comparing to ZnO thin films, both nanowires and nanoholes have much improved performance. ZnO nanowires and nanoholes have similar absorptions in the UV range. However, ZnO nanowires have lower absorptance than nanoholes in the visible range. Influences of different parameters including lattice constant a, ZnO filling ratio f and nanowire heights h are analyzed. The optical properties of the nanostructures are less dependent on the incident angle of light, which enables them to be used as wide angle anti-reflective coatings with UV blocking. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:3238 / 3241
页数:4
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