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Energy Express

  • Editor: Bernard Kippelen
  • Vol. 20, Iss. S1 — Jan. 2, 2012
  • pp: A125–A132

Effect of aperiodicity on the broadband reflection of silicon nanorod structures for photovoltaics

Chenxi Lin, Ningfeng Huang, and Michelle L. Povinelli  »View Author Affiliations

Optics Express, Vol. 20, Issue S1, pp. A125-A132 (2012)

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We carry out a systematic numerical study of the effects of aperiodicity on silicon nanorod anti-reflection structures. We use the scattering matrix method to calculate the average reflection loss over the solar spectrum for periodic and aperiodic arrangements of nanorods. We find that aperiodicity can either improve or deteriorate the anti-reflection performance, depending on the nanorod diameter. We use a guided random-walk algorithm to design optimal aperiodic structures that exhibit lower reflection loss than both optimal periodic and random aperiodic structures.

© 2011 OSA

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:

Original Manuscript: October 24, 2011
Revised Manuscript: December 5, 2011
Manuscript Accepted: December 8, 2011
Published: December 22, 2011

Chenxi Lin, Ningfeng Huang, and Michelle L. Povinelli, "Effect of aperiodicity on the broadband reflection of silicon nanorod structures for photovoltaics," Opt. Express 20, A125-A132 (2012)

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