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Proceedings Paper

Collection and conversion properties of photovoltaic fluorescent collectors with photonic band stop filters
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Paper Abstract

The thermodynamic limits of photovoltaic solar energy conversion by fluorescent collectors are examined theoretically and experimaentally. The maximum efficiency of a fluorescent collector corresponds to the Shockley-Queisser limit for a non-concentrating solar cell with a single band gap energy. To achieve this efficiency the collector requires a photonic structure at its surface that acts as an omni-directional spectral band stop filter. Such a band stop filter is also required to achieve the thermodynamic light concentration limit in a fluorescent collector. The potential of photonic structures for the efficiency enhancement of idealized and real fluorescent collectors is highlighted. Analysis of a fluorescent collector system ny spatially resolved light induced current measurements and by quantum efficiency analysis shows that the collection efficiency of a real fluorescent collector system increases by up to 30% with the help of a Bragg stack on top of the collector acting as a band stop filter.

Paper Details

Date Published: 12 May 2006
PDF: 11 pages
Proc. SPIE 6197, Photonics for Solar Energy Systems, 61970L (12 May 2006); doi: 10.1117/12.669638
Show Author Affiliations
Gerda C. Glaeser, Univ. Stuttgart (Germany)
Uwe Rau, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 6197:
Photonics for Solar Energy Systems
Andreas Gombert, Editor(s)

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