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8 May 2008 Directional selectivity and light-trapping in solar cells
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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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Carolin Ulbrich, Stephan Fahr, Marius Peters, Johannes Üpping, Thomas Kirchartz, Carsten Rockstuhl, Jan Christoph Goldschmidt, Philipp Löper, Ralf Wehrspohn, Andreas Gombert, Falk Lederer, and Uwe Rau "Directional selectivity and light-trapping in solar cells", Proc. SPIE 7002, Photonics for Solar Energy Systems II, 70020A (8 May 2008);

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