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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21608–21615

Trapping light with micro lenses in thin film organic photovoltaic cells

Kristofer Tvingstedt, Simone Dal Zilio, Olle Inganäs, and Massimo Tormen  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21608-21615 (2008)

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We demonstrate a novel light trapping configuration based on an array of micro lenses in conjunction with a self aligned array of micro apertures located in a highly reflecting mirror. When locating the light trapping element, that displays strong directional asymmetric transmission, in front of thin film organic photovoltaic cells, an increase in cell absorption is obtained. By recycling reflected photons that otherwise would be lost, thinner films with more beneficial electrical properties can effectively be deployed. The light trapping element enhances the absorption rate of the solar cell and increases the photocurrent by as much as 25%.

© 2008 Optical Society of America

OCIS Codes
(040.5350) Detectors : Photovoltaic
(160.4890) Materials : Organic materials
(220.3630) Optical design and fabrication : Lenses
(220.4000) Optical design and fabrication : Microstructure fabrication
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: October 28, 2008
Revised Manuscript: December 4, 2008
Manuscript Accepted: December 5, 2008
Published: December 15, 2008

Kristofer Tvingstedt, Simone Dal Zilio, Olle Inganäs, and Massimo Tormen, "Trapping light with micro lenses in thin film organic photovoltaic cells," Opt. Express 16, 21608-21615 (2008)

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