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

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.
Authors:
; ; ;  [1]
  1. Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE (United Kingdom)
Publication Date:
OSTI Identifier:
22308204
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 17; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; COMPUTERIZED SIMULATION; DOPED MATERIALS; EFFICIENCY; ENERGY TRANSFER; LUMINESCENCE; MOLECULES; MONTE CARLO METHOD; QUANTUM DOTS; RESONANCE; SOLAR CONCENTRATORS; TRAPPING