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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 9 — Oct. 3, 2011

Harvesting light at the nanoscale by GaAs-gold nanowire arrays

Stéphane Collin, Fabrice Pardo, Nathalie Bardou, Aristide Lemaître, Stanislav Averin, and Jean-Luc Pelouard  »View Author Affiliations

Optics Express, Vol. 19, Issue 18, pp. 17293-17297 (2011)

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A nanoscale metal-semiconductor-metal photodetector with a 40 nm-thick GaAs absorbing layer has been studied numerically and experimentally. A gold nanowire array is the top mirror of a Fabry-Perot cavity and forms interdigitated Schottky contacts. Nearly perfect absorption is achieved in TE polarization. It is shown numerically that the gold nanowire array induces light absorption in GaAs nanowires with tiny sections (100 nm × 40 nm). High external quantum efficiency (η > 40 %) is demonstrated.

© 2011 OSA

OCIS Codes
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(260.2110) Physical optics : Electromagnetic optics
(260.3910) Physical optics : Metal optics

ToC Category:
Solar Energy

Original Manuscript: May 27, 2011
Revised Manuscript: July 11, 2011
Manuscript Accepted: July 13, 2011
Published: August 18, 2011

Virtual Issues
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics

Stéphane Collin, Fabrice Pardo, Nathalie Bardou, Aristide Lemaître, Stanislav Averin, and Jean-Luc Pelouard, "Harvesting light at the nanoscale by GaAs-gold nanowire arrays," Opt. Express 19, 17293-17297 (2011)

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