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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 4055–4060

Incorporation of nanovoids into metallic gratings for broadband plasmonic organic solar cells

Sangjun Lee, SungJun In, Daniel R. Mason, and Namkyoo Park  »View Author Affiliations

Optics Express, Vol. 21, Issue 4, pp. 4055-4060 (2013)

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We present investigation and optimization of a newly proposed plasmonic organic solar cell geometry based on the incorporation of nanovoids into conventional rectangular backplane gratings. Hybridization of strongly localized plasmonic modes of the nanovoids with Fabry-Perot cavity modes originating from surface plasmon reflection at the grating elements is shown to significantly boost performance in the long wavelength regime. This constitutes improved broadband operation while maintaining absorption enhancements at short wavelengths derived from conventional rectangular grating. Our calculations predict a figure of merit enhancement of up to 41% compared to when the nanovoid indented grating is absent. This is a significant improvement over the previously considered rectangular grating structures, which is further shown to be maintained over the entire angular range.

© 2013 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(050.2770) Diffraction and gratings : Gratings
(240.0310) Optics at surfaces : Thin films
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Solar Energy

Original Manuscript: November 16, 2012
Revised Manuscript: January 23, 2013
Manuscript Accepted: January 24, 2013
Published: February 11, 2013

Sangjun Lee, SungJun In, Daniel R. Mason, and Namkyoo Park, "Incorporation of nanovoids into metallic gratings for broadband plasmonic organic solar cells," Opt. Express 21, 4055-4060 (2013)

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