期刊
OPTICS LETTERS
卷 33, 期 19, 页码 2224-2226出版社
Optica Publishing Group
DOI: 10.1364/OL.33.002224
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资金
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0744879] Funding Source: National Science Foundation
We have developed a simple and scalable bottom-up approach for fabricating moth-eye antireflective coatings on GaAs substrates. Monolayer, non-close-packed silica colloidal crystals are created on crystalline GaAs wafers by a spin-coating-based single-layer reduction technique. These colloidal monolayers can be used as etching masks during a BCl3 dry-etch process to generate subwavelength-structured antireflective gratings directly on GaAs substrates. The gratings exhibit excellent broadband antireflective properties, and the specular reflection matches with the theoretical prediction using a rigorous coupled-wave analysis model. These bioinspired antireflection coatings have important technological applications ranging from efficient solar cells to IR detectors. (C) 2008 Optical Society of America
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