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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21801–21806

Optical waveguide enhanced photovoltaics

Sven Rühle, Shlomit Greenwald, Elad Koren, and Arie Zaban  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21801-21806 (2008)

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Enhanced light to electric power conversion efficiency of photovoltaic cells with a low absorbance was achieved using waveguide integration. We present a proof of concept using a very thin dye-sensitized solar cell which absorbed only a small fraction of the light at normal incidence. The glass substrate in conjunction with the solar cells reflecting back contact formed a planar waveguide, which lead to more than four times higher conversion efficiency compared to conventional illumination at normal incidence. This illumination concept leads to a new type of multi-junction PV systems based on enforced spectral splitting along the waveguide.

© 2008 Optical Society of America

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(310.2785) Thin films : Guided wave applications

Original Manuscript: August 14, 2008
Revised Manuscript: October 31, 2008
Manuscript Accepted: November 12, 2008
Published: December 17, 2008

Virtual Issues
Optics for Energy (2008) Optics Express

Sven Rühle, Shlomit Greenwald, Elad Koren, and Arie Zaban, "Optical Waveguide Enhanced Photovoltaics," Opt. Express 16, 21801-21806 (2008)

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