The effect of an organic selectively-reflecting mirror on the performance of a luminescent solar concentrator

M.G. Debije, M.-P. Van, P.P.C. Verbunt, D.J. Broer, C.W.M. Bastiaansen

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

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To reduce the surface losses in the luminescent solar concentrator (LSC) we have applied an organic wavelength-selective mirror, a chiral nematic (cholesteric) liquid crystal, onto a fluorescent waveguide with a small air gap in between. We compare the light outputs of the waveguide with absorbing, scattering, and mirrored bottoms. The highest light output is achieved using a scattering background and a cholesteric mirror with a reflection band significantly red-shifted with respect to the emission spectrum of the fluorescent dye. The use of an air gap results in refraction and light bending away from the normal and, consequently, a red shift of the cholesteric mirrors is required which also negatively affects its performance. A 15% increase in edge power output is demonstrated at low dye concentrations, suggesting light that is emitted to the surface of the waveguide is re-directed by the mirrors to the edge with an efficiency of about 35%. At high fluorescent dye concentrations, the chiral-nematic mirrors have reduced impact on dye emission.
Originele taal-2Engels
TitelProceedings of the 24th European Photovoltaic Solar Energy Conference
UitgeverijWIP
Pagina's373-376
ISBN van geprinte versie3-936338-25-6
DOI's
StatusGepubliceerd - 2009
Evenement24th European Photovoltaic Solar Energy Conference (EU PVSEC 2009) - Hamburg
Duur: 21 sep. 200925 sep. 2009
Congresnummer: 24

Congres

Congres24th European Photovoltaic Solar Energy Conference (EU PVSEC 2009)
Verkorte titelPVSEC 2009
StadHamburg
Periode21/09/0925/09/09
Ander24th European Photovoltaic Solar Energy Conference (EU PVSEC), 21-25 September 2009, Hamburg, Germany

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