Sponsor
This work was supported by the National Science Foundation (NSF) under grants CBET-0651780 and CBET-0744879, ACS Petroleum Research Fund, and the University of Florida Research Opportunity Incentive Seed Fund.
Published In
Optics Letters
Document Type
Article
Publication Date
10-1-2008
Subjects
Thin films -- Optical properties, Gallium arsenide semiconductors -- Design and construction, Colloids -- Electric properties, Solar cells
Abstract
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 BCl_3 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
DOI
10.1364/OL.33.002224
Persistent Identifier
http://archives.pdx.edu/ds/psu/7283
Citation Details
Sun, Chih-Hung, Ho, Brian, Jiang, Bin, Jiang, Peng (2008) Biomimetic Subwavelength Antireflective Gratings on GaAs. Optics Letters, 33, 2224-2226
Description
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://ejournals.ebsco.com/direct.asp?ArticleID=43ABA7D7F7DB942D0CF5. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.