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Anisotropic light emission from aligned luminophores

Published online by Cambridge University Press:  17 June 2014

Paul P.C. Verbunt ,
Ties M. de Jong ,
Dick K.G. de Boer ,
Dirk J. Broer  and
Michael G. Debije
Paul P.C. Verbunt
Affiliation:
Functional Organic Materials & Devices, Chemical Engineering & Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
Ties M. de Jong
Affiliation:
Functional Organic Materials & Devices, Chemical Engineering & Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
Dick K.G. de Boer
Affiliation:
Philips Research Europe, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
Dirk J. Broer
Affiliation:
Functional Organic Materials & Devices, Chemical Engineering & Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
Michael G. Debije*
Affiliation:
Functional Organic Materials & Devices, Chemical Engineering & Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
*
aemail: m.g.debije@tue.nl
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Abstract

The emission of aligned dichroic dyes in a luminescent solar concentrator (LSC) illuminated from one side with collimated light results in a non-isotropic light distribution. We develop a model to describe emission profiles for dichroic dyes aligned at a general tilt angle with respect to a lightguide surface (including planar and homeotropic alignments) for various order parameters. We compare calculations with experimental results, demonstrating the dichroic nature of the dyes can have significant impact on the surface loss of luminescent solar concentrators. Including this dichroic nature is essential in correctly simulating the preferred edge emissions demonstrated experimentally in dyes aligned planarly on the surface of a lightguide.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 67 , Issue 1 , July 2014 , 10201
Copyright
© EDP Sciences, 2014

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