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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 17 — Aug. 17, 2009
  • pp: 15145–15159

Absorber and emitter for solar thermo-photovoltaic systems to achieve efficiency exceeding the Shockley-Queisser limit

Eden Rephaeli and Shanhui Fan  »View Author Affiliations


Optics Express, Vol. 17, Issue 17, pp. 15145-15159 (2009)
http://dx.doi.org/10.1364/OE.17.015145


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Abstract

We present theoretical considerations as well as detailed numerical design of absorber and emitter for Solar Thermophotovoltaics (STPV) applications. The absorber, consisting of an array of tungsten pyramids, was designed to provide near-unity absorptivity over all solar wavelengths for a wide angular range, enabling it to absorb light effectively from solar sources regardless of concentration. The emitter, a tungsten slab with Si/SiO2 multilayer stack, provides a sharp emissivity peak at the solar cell band-gap while suppressing emission at lower frequencies. We show that, under a suitable light concentration condition, and with a reasonable area ratio between the emitter and absorber, a STPV system employing such absorber-emitter pair and a single-junction solar cell can attain efficiency that exceeds the Shockley-Queisser limit.

© 2009 OSA

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

ToC Category:
Solar Energy

History
Original Manuscript: June 16, 2009
Revised Manuscript: July 20, 2009
Manuscript Accepted: July 20, 2009
Published: August 11, 2009

Citation
Eden Rephaeli and Shanhui Fan, "Absorber and emitter for solar thermo-photovoltaic systems to achieve efficiency exceeding the Shockley-Queisser limit," Opt. Express 17, 15145-15159 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-17-15145


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