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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 19 — Sep. 15, 2008
  • pp: 15238–15248

Thin film silicon solar cell design based on photonic crystal and diffractive grating structures

James G. Mutitu, Shouyuan Shi, Caihua Chen, Timothy Creazzo, Allen Barnett, Christiana Honsberg, and Dennis W. Prather  »View Author Affiliations

Optics Express, Vol. 16, Issue 19, pp. 15238-15248 (2008)

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In this paper we present novel light trapping designs applied to stand alone and multiple junction thin film silicon solar cells. The new designs incorporate one dimensional photonic crystals as band pass filters that reflect short light wavelengths (400 – 1100 nm) and transmit longer wavelengths(1100 – 1800 nm) at the interface between two adjacent cells. In addition, nano structured diffractive gratings that cut into the photonic crystal layers are incorporated to redirect incoming waves and hence increase the optical path length of light within the solar cells. Two designs based on the nano structured gratings that have been realized using the scattering matrix and particle swarm optimization methods are presented. We also show preliminary fabrication results of the proposed light trapping grating structures.

© 2008 Optical Society of America

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(050.5298) Diffraction and gratings : Photonic crystals
(310.6805) Thin films : Theory and design
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Thin Films

Original Manuscript: May 16, 2008
Revised Manuscript: July 11, 2008
Manuscript Accepted: August 25, 2008
Published: September 12, 2008

James G. Mutitu, Shouyuan Shi, Caihua Chen, Timothy Creazzo, Allen Barnett, Christiana Honsberg, and Dennis W. Prather, "Thin film solar cell design based on photonic crystal and diffractive grating structures," Opt. Express 16, 15238-15248 (2008)

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