Broadband omnidirectional antireflection coatings optimized by genetic algorithm
SCIE
SCOPUS
- Title
- Broadband omnidirectional antireflection coatings optimized by genetic algorithm
- Authors
- Poxson, DJ; Schubert, MF; Mont, FW; Schubert, EF; Kim, JK
- Date Issued
- 2009-03-15
- Publisher
- OPTICAL SOC AMER
- Abstract
- An optimized graded-refractive-index (GRIN) antireflection. (AR) coating with broadband and omnidirectional characteristics-as desired for solar cell applications-designed by a genetic algorithm is presented. The optimized three-layer GRIN AR coating consists of a dense TiO2 and two nanoporous SiO2 layers fabricated using oblique-angle deposition. The normal incidence reflectance of the three-layer GRIN AR coating averaged between 400 and 700 nm is 3.9%, which is 37% lower than that of a conventional single-layer Si3N4 coating. Furthermore, measured reflection over the 410-740 run range and wide incident angles 40 degrees-80 degrees is reduced by 73% in comparison with the single-layer Si3N4 coating, clearly showing enhanced omnidirectionality and broadband characteristics of the optimized three-layer GRIN AR coating. (C) 2009 Optical Society of America
- Keywords
- LOW-REFRACTIVE-INDEX; REFLECTION; DESIGN
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28195
- DOI
- 10.1364/OL.34.000728
- ISSN
- 0146-9592
- Article Type
- Article
- Citation
- OPTICS LETTERS, vol. 34, no. 6, page. 728 - 730, 2009-03-15
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.