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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 14312–14321

Absorption enhancement using photonic crystals for silicon thin film solar cells

Yeonsang Park, Emmanuel Drouard, Ounsi El Daif, Xavier Letartre, Pierre Viktorovitch, Alain Fave, Anne Kaminski, Mustapha Lemiti, and Christian Seassal  »View Author Affiliations

Optics Express, Vol. 17, Issue 16, pp. 14312-14321 (2009)

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We propose a design that increases significantly the absorption of a thin layer of absorbing material such as amorphous silicon. This is achieved by patterning a one-dimensional photonic crystal (1DPC) in this layer. Indeed, by coupling the incident light into slow Bloch modes of the 1DPC, we can control the photon lifetime and then, enhance the absorption integrated over the whole solar spectrum. Optimal parameters of the 1DPC maximize the integrated absorption in the wavelength range of interest, up to 45% in both S and P polarization states instead of 33% for the unpatterned, 100 nm thick amorphous silicon layer. Moreover, the absorption is tolerant with respect to fabrication errors, and remains relatively stable if the angle of incidence is changed.

© 2009 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(160.5298) Materials : Photonic crystals
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Photonic Crystal Cavities

Original Manuscript: May 27, 2009
Revised Manuscript: June 24, 2009
Manuscript Accepted: June 24, 2009
Published: July 31, 2009

Yeonsang Park, Emmanuel Drouard, Ounsi El Daif, Xavier Letartre, Pierre Viktorovitch, Alain Fave, Anne Kaminski, Mustapha Lemiti, and Christian Seassal, "Absorption enhancement using photonic crystals for silicon thin film solar cells," Opt. Express 17, 14312-14321 (2009)

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