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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 18, Iss. S1 — Apr. 26, 2010
  • pp: A73–A78

Multijunction solar cells for conversion of concentrated sunlight to electricity

Sarah Kurtz and John Geisz  »View Author Affiliations

Optics Express, Vol. 18, Issue S1, pp. A73-A78 (2010)

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Solar-cell efficiencies have exceeded 40% in recent years. The keys to achieving these high efficiencies include: 1) use of multiple materials that span the solar spectrum, 2) growth of these materials with near-perfect quality by using epitaxial growth on single-crystal substrates, and 3) use of concentration. Growth of near-perfect semiconductor materials is possible when the lattice constants of the materials are matched or nearly matched to that of a single-crystal substrate. Multiple material combinations have now demonstrated efficiencies exceeding 40%, motivating incorporation of these cells into concentrator systems for electricity generation. The use of concentration confers several key advantages.

© 2010 OSA

OCIS Codes
(230.5170) Optical devices : Photodiodes
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Solar Concentrators

Original Manuscript: January 14, 2010
Revised Manuscript: April 16, 2010
Manuscript Accepted: April 16, 2010
Published: April 26, 2010

Virtual Issues
Focus Issue: Solar Concentrators (2010) Optics Express

Sarah Kurtz and John Geisz, "Multijunction solar cells for conversion of concentrated sunlight to electricity," Opt. Express 18, A73-A78 (2010)

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