標題: Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures
作者: Huang, Yi-Fan
Chattopadhyay, Surojit
Jen, Yi-Jun
Peng, Cheng-Yu
Liu, Tze-An
Hsu, Yu-Kuei
Pan, Ci-Ling
Lo, Hung-Chun
Hsu, Chih-Hsun
Chang, Yuan-Huei
Lee, Chih-Shan
Chen, Kuei-Hsien
Chen, Li-Chyong
材料科學與工程學系
光電工程學系
Department of Materials Science and Engineering
Department of Photonics
公開日期: 1-Dec-2007
摘要: Nature routinely produces nanostructured surfaces with useful properties, such as the self-cleaning lotus leaf, the colour of the butterfly wing, the photoreceptor in brittlestar and the anti-reflection observed in the moth eye. Scientists and engineers have been able to mimic some of these natural structures in the laboratory and in real-world applications. Here, we report a simple aperiodic array of silicon nanotips on a 6-inch wafer with a sub-wavelength structure that can suppress the reflection of light at a range of wavelengths from the ultraviolet, through the visible part of the spectrum, to the terahertz region. Reflection is suppressed for a wide range of angles of incidence and for both s- and p-polarized light. The antireflection properties of the silicon result from changes in the refractive index caused by variations in the height of the silicon nanotips, and can be simulated with models that have been used to explain the low reflection from moth eyes. The improved anti-reflection properties of the surfaces could have applications in renewable energy and electro-optical devices for the military.
URI: http://dx.doi.org/10.1038/nnano.2007.389
http://hdl.handle.net/11536/10068
ISSN: 1748-3387
DOI: 10.1038/nnano.2007.389
期刊: NATURE NANOTECHNOLOGY
Volume: 2
Issue: 12
起始頁: 770
結束頁: 774
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