Efficient light trapping in a fluorescence solar collector by 3D photonic crystal
Knabe, Sebastian, Soleimani, Nazila, Markvart, Tomas and Bauer, Gottfried Heinrich (2010) Efficient light trapping in a fluorescence solar collector by 3D photonic crystal. Physica Status Solidi (RRL) Rapid Research Letters (doi:10.1002/pssr.201004047 ).
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The escape of photons from a fluorescence collector is substantially reduced by the addition of a 3D photonic crystal which is geometrically designed for the emission wavelengths of the collector. We analyze angle dependent spectral transmission and reflection of the opal and prove the blocking effect by recording the angle dependence of the spectral fluorescence from the collector with and without the opal. By comparison of both photon fluxes a reduction of the emission in the appropriate ranges of wavelength and angle by a factor >10 is observed. For photovoltaic applications an increase in the internal photon density of the collector and likewise in the fluorescence photon flux fed to a solar cell can be expected, which might be overcompensated by the non-negligible reflection of the opal.
|Keywords:||solar cells, spectral fluorescence, photonic crystal, angular dependence|
|Subjects:||T Technology > T Technology (General)|
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
|Date Deposited:||22 Apr 2010 10:12|
|Last Modified:||01 Jun 2011 03:09|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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