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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 8 — Apr. 14, 2008
  • pp: 5290–5298

Design of multilayer antireflection coatings made from co-sputtered and low-refractive-index materials by genetic algorithm

Martin F. Schubert, Frank W. Mont, Sameer Chhajed, David J. Poxson, Jong Kyu Kim, and E. Fred Schubert  »View Author Affiliations


Optics Express, Vol. 16, Issue 8, pp. 5290-5298 (2008)
http://dx.doi.org/10.1364/OE.16.005290


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Abstract

Designs of multilayer antireflection coatings made from co-sputtered and low-refractive-index materials are optimized using a genetic algorithm. Co-sputtered and low-refractive-index materials allow the fine-tuning of refractive index, which is required to achieve optimum antireflection characteristics. The algorithm minimizes reflection over a wide range of wavelengths and incident angles, and includes material dispersion. Designs of antireflection coatings for silicon-based image sensors and solar cells, as well as triple-junction GaInP/GaAs/Ge solar cells are presented, and are shown to have significant performance advantages over conventional coatings. Nano-porous low-refractive-index layers are found to comprise generally half of the layers in an optimized antireflection coating, which underscores the importance of nano-porous layers for high-performance broadband and omnidirectional antireflection coatings.

© 2008 Optical Society of America

OCIS Codes
(310.1210) Thin films : Antireflection coatings
(310.4165) Thin films : Multilayer design

ToC Category:
Thin Films

History
Original Manuscript: February 11, 2008
Revised Manuscript: March 20, 2008
Manuscript Accepted: March 27, 2008
Published: April 1, 2008

Citation
Martin F. Schubert, Frank W. Mont, Sameer Chhajed, David J. Poxson, Jong Kyu Kim, and E. Fred Schubert, "Design of multilayer antireflection coatings made from co-sputtered and low-refractive-index materials by genetic algorithm," Opt. Express 16, 5290-5298 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-8-5290


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