Increased efficiency of luminescent solar concentrators after application of organic wavelength selective mirrors

P.P.C. Verbunt, S. Tsoi, M.G. Debije, D.J. Broer, C.W.M. Bastiaansen, C.-W. Lin, D.K.G. Boer, de

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

29 Citaten (Scopus)
151 Downloads (Pure)

Samenvatting

Organic wavelength-selective mirrors are used to reduce the loss of emitted photons through the surface of a luminescent solar concentrator (LSC). A theoretical calculation suggests that application of a 400 nm broad reflector on top of an LSC containing BASF Lumogen Red 305 as a luminophore can reflect 91% of all surface emitted photons back into the device. Used in this way, such broad reflectors could increase the edge-emission efficiency of the LSC by up to 66%. Similarly, 175 nm broad reflectors could increase efficiency up to 45%. Measurements demonstrate more limited effectiveness and dependency on the peak absorbance of the LSC. At higher absorbance, the increased number of internal re-absorption events reduces the effectiveness of the reflectors, leading to a maximum increase in LSC efficiency of ~5% for an LSC with a peak absorbance of 1. Reducing re-absorption by reducing dye concentration or the coverage of the luminophore coating results in an increase in LSC efficiency of up to 30% and 27%, respectively.
Originele taal-2Engels
Pagina's (van-tot)A655-A668
TijdschriftOptics Express
Volume20
Nummer van het tijdschrift55
DOI's
StatusGepubliceerd - 2012

Vingerafdruk

Duik in de onderzoeksthema's van 'Increased efficiency of luminescent solar concentrators after application of organic wavelength selective mirrors'. Samen vormen ze een unieke vingerafdruk.

Citeer dit