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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 21, Iss. S1 — Jan. 14, 2013
  • pp: A157–A166

Enhanced broadband and omni-directional performance of polycrystalline Si solar cells by using discrete multilayer antireflection coatings

Seung Jae Oh, Sameer Chhajed, David J. Poxson, Jaehee Cho, E. Fred Schubert, Sung Ju Tark, Donghwan Kim, and Jong Kyu Kim  »View Author Affiliations


Optics Express, Vol. 21, Issue S1, pp. A157-A166 (2013)
http://dx.doi.org/10.1364/OE.21.00A157


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Abstract

The performance enhancement of polycrystalline Si solar cells by using an optimized discrete multilayer anti-reflection (AR) coating with broadband and omni-directional characteristics is presented. Discrete multilayer AR coatings are optimized by a genetic algorithm, and experimentally demonstrated by refractive-index tunable SiO2 nano-helix arrays and co-sputtered (SiO2)x(TiO2)1-x thin film layers. The optimized multilayer AR coating shows a reduced total reflection, leading to the high incident-photon-to-electron conversion efficiency over a correspondingly wide range of wavelengths and incident angles, offering a very promising way to harvest more solar energy by virtually any type of solar cells for a longer time of a day.

© 2012 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(310.1210) Thin films : Antireflection coatings
(310.4165) Thin films : Multilayer design
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Photovoltaics

History
Original Manuscript: July 31, 2012
Revised Manuscript: November 29, 2012
Manuscript Accepted: November 29, 2012
Published: December 17, 2012

Citation
Seung Jae Oh, Sameer Chhajed, David J. Poxson, Jaehee Cho, E. Fred Schubert, Sung Ju Tark, Donghwan Kim, and Jong Kyu Kim, "Enhanced broadband and omni-directional performance of polycrystalline Si solar cells by using discrete multilayer antireflection coatings," Opt. Express 21, A157-A166 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-S1-A157


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