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Proceedings Paper

Directional selectivity and light-trapping in solar cells
Author(s): Carolin Ulbrich; Stephan Fahr; Marius Peters; Johannes Üpping; Thomas Kirchartz; Carsten Rockstuhl; Jan Christoph Goldschmidt; Philipp Löper; Ralf Wehrspohn; Andreas Gombert; Falk Lederer; Uwe Rau
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Paper Abstract

The Yablonovitch limit for light trapping in solar cells with Lambertian surfaces can be increased using angle selective absorbers thereby exploiting the limited incidence angle of solar radiation. We simulate the efficiency gain or loss caused by an angular and energy selective filter on top of the absorber, compared to a Lambertian and a flat absorber. Additionally, we introduce two possible implementations of such a filter, a Rugate stack and inverted opal layers.

Paper Details

Date Published: 8 May 2008
PDF: 11 pages
Proc. SPIE 7002, Photonics for Solar Energy Systems II, 70020A (8 May 2008); doi: 10.1117/12.781248
Show Author Affiliations
Carolin Ulbrich, Univ. Stuttgart (Germany)
Stephan Fahr, Friedrich-Schiller-Univ. Jena (Germany)
Marius Peters, Fraunhofer-Institut für Solare Energiesysteme (Germany)
Johannes Üpping, Univ. Halle-Wittenberg (Germany)
Thomas Kirchartz, Forschungszentrum Jülich GmbH (Germany)
Carsten Rockstuhl, Friedrich-Schiller-Univ. Jena (Germany)
Jan Christoph Goldschmidt, Fraunhofer-Institut für Solare Energiesysteme (Germany)
Philipp Löper, Fraunhofer-Institut für Solare Energiesysteme (Germany)
Ralf Wehrspohn, Univ. Halle-Wittenberg (Germany)
Andreas Gombert, Fraunhofer-Institut für Solare Energiesysteme (Germany)
Falk Lederer, Friedrich-Schiller-Univ. Jena (Germany)
Uwe Rau, Forschungszentrum Jülich GmbH (Germany)

Published in SPIE Proceedings Vol. 7002:
Photonics for Solar Energy Systems II
Andreas Gombert, Editor(s)

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