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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 10399–10410

Dispersion, Wave Propagation and Efficiency Analysis of Nanowire Solar Cells

J. Kupec and B. Witzigmann  »View Author Affiliations

Optics Express, Vol. 17, Issue 12, pp. 10399-10410 (2009)

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We analyze the electromagnetic properties of InP/InAs nanowire solar cells for different geometries. We address both eigenvalue calculations to determine the wave propagation as well as source problems to simulate direct perpendicular illumination by three-dimensional finite element calculations. We demonstrate the validity of a 2D waveguide modal analysis as a method of estimating the results of the computationally far more demanding 3D analysis. The resulting data is employed in a detailed balance analysis in order to determine the optimum set of bandgap energies for a single-junction and dual-junction cell as well as the corresponding efficiency limit. The efficiency of the nanowire design can approach the efficiency of conventional thin-film designs despite the low volume fill-factor.

© 2009 Optical Society of America

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Solar Energy

Original Manuscript: April 29, 2009
Revised Manuscript: May 27, 2009
Manuscript Accepted: June 3, 2009
Published: June 5, 2009

J. Kupec and B. Witzigmann, "Dispersion, Wave Propagation and Efficiency Analysis of Nanowire Solar Cells," Opt. Express 17, 10399-10410 (2009)

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