title: Plasmon enhanced upconversion luminescence near gold nanoparticles-simulation and analysis of the interactions.
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.
authors.affiliation: Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany. stefan.fischer@ise.fraunhofer.de
authors.forename: Stefan
authors.initials: S
authors.lastname: Fischer
authors.forename: Florian
authors.initials: F
authors.lastname: Hallermann
authors.forename: Toni
authors.initials: T
authors.lastname: Eichelkraut
authors.forename: Gero
authors.initials: G
authors.lastname: von Plessen
authors.forename: Karl W
authors.initials: KW
authors.lastname: Krämer
authors.forename: Daniel
authors.initials: D
authors.lastname: Biner
authors.forename: Heiko
authors.initials: H
authors.lastname: Steinkemper
authors.forename: Martin
authors.initials: M
authors.lastname: Hermle
authors.forename: Jan C
authors.initials: JC
authors.lastname: Goldschmidt
mesh_terms: D003198:Computer Simulation; D006046:Gold / Q000737:chemistry*; D008027:Light; D008163:Luminescent Measurements / Q000379:methods*; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D006046:Gold