Optimization of Solution-Processed Luminescent Down-Shifting Layers for Photovoltaics by Customizing Organic Dye Based Thick Films

Solodovnyk A, Kick C, Osvet A, Egelhaaf HJ, Stern E, Batentschuk M, Forberich K, Brabec C (2016)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Book Volume: 4

Pages Range: 385-392

DOI: 10.1002/ente.201500404

Abstract

We theoretically and experimentally determined the optimized
film properties of luminescent down-shifting (LDS)
layers for thin film solar cells. Based on the predictions from
an adapted optical model, we coated thick (300–500 mm) and
efficient luminescent down-shifting layers from environmentally
friendly solvents and industrially scalable inks. LDS
layers consisted of polyvinyl butyral (PVB) as binder and organic
luminescent dyes as UV-converters. The luminescence
quantum yields of the dyes were studied in solution (benzyl
alcohol) and for solid thick films. Our data shows that the
studied dyes retain luminescent efficiencies of approximately
90% in the solid state when processed from solution. We further
apply the produced layers onto copper indium gallium
diselenide (CIGS) solar cells to verify the theoretical predictions
for enhancing the external quantum efficiency (EQE)
in the UV region. For the best converters a remarkable enhancement
of the EQE from 9% to 52% was recorded at
380 nm. These findings underline that printed LDS layers
indeed have the potential to enhance the efficiency and the
light harvesting capabilities of industrially relevant photovoltaic
modules.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern) Germany (DE)

How to cite

APA:

Solodovnyk, A., Kick, C., Osvet, A., Egelhaaf, H.J., Stern, E., Batentschuk, M.,... Brabec, C. (2016). Optimization of Solution-Processed Luminescent Down-Shifting Layers for Photovoltaics by Customizing Organic Dye Based Thick Films. Energy Technology, 4, 385-392. https://doi.org/10.1002/ente.201500404

MLA:

Solodovnyk, Anastasiia, et al. "Optimization of Solution-Processed Luminescent Down-Shifting Layers for Photovoltaics by Customizing Organic Dye Based Thick Films." Energy Technology 4 (2016): 385-392.

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