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Plasmon enhanced upconversion luminescence near gold nanoparticles - simulation and analysis of the interactions

 
: Fischer, S.; Hallermann, F.; Eichelkraut, T.; Plessen, G. von; Krämer, K.W.; Biner, D.; Steinkemper, H.; Hermle, M.; Goldschmidt, J.C.

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Postprint (1.4 MByte; PDF; )

Optics Express 20 (2012), No.1, pp.271-282
ISSN: 1094-4087
English
Journal Article, Electronic Publication
Fraunhofer ISE ()
Solarzellen - Entwicklung und Charakterisierung; Farbstoff; Organische und Neuartige Solarzellen; Silicium-Photovoltaik; Alternative Photovoltaik-Technologien; Photonenmanagement; Industrielle und neuartige Solarzellenstrukturen; Neuartige Konzepte; Hochkonversion

Abstract
We investigate plasmon resonances in gold nanoparticles to enhance the quantum yield of upconverting materials. For this purpose, we use a rate equation model that describes the upconversion of trivalent erbium based upconverters. Changes of the optical field acting on the upconverter and the changes to the transition probabilities of the upconverter in the proximity of a gold nanoparticle are calculated using Mie theory and exact electrodynamic theory respectively. With this data, the influence on the luminescence of the upconverter is determined using the rate equation model. The results show that upconversion luminescence can be increased in the proximity of a spherical gold nanoparticle due to the change in the optical field and the modification of the transition rates.

: http://publica.fraunhofer.de/documents/N-206979.html