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Homeotropic alignment and Förster resonance energy transfer: the way to a brighter luminescent solar concentrator

Tummeltshammer, C; Taylor, A; Kenyon, AJ; Papakonstantinou, I; (2014) Homeotropic alignment and Förster resonance energy transfer: the way to a brighter luminescent solar concentrator. Journal of Applied Physics , 116 , Article 173103. 10.1063/1.4900986. Green open access

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Abstract

We investigate homeotropically aligned fluorophores and Förster resonance energy transfer (FRET) for luminescent solar concentrators using Monte-Carlo ray tracing. The homeotropic alignment strongly improves the trapping efficiency, while FRET circumvents the low absorption at homeotropic alignment by separating the absorption and emission processes. We predict that this design doped with two organic dye molecules can yield a 82.9% optical efficiency improvement compared to a single, arbitrarily oriented dye molecule. We also show that quantum dots are prime candidates for absorption/donor fluorophores due to their wide absorption band. The potentially strong re-absorption and low quantum yield of quantum dots is not a hindrance for this design.

Type: Article
Title: Homeotropic alignment and Förster resonance energy transfer: the way to a brighter luminescent solar concentrator
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.4900986
Publisher version: http://dx.doi.org/10.1063/1.4900986
Language: English
Additional information: © 2014 Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/1454357
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