Theory of plasmon-enhanced Förster energy transfer in optically excited semiconductor and metal nanoparticles
By A. Govorov, Jaebeom Lee, Nicholas A. Kotov. 2006
233 citations recorded by the source corpus.
We describe the process of Foerster transfer between semiconductor nanoparticles in the presence of a metal subsystem (metal nanocrystals). In the presence of metal nanocrystals, the Foerster process can become faster and more long-range. The enhancement of Foerster transfer occurs due to the effect of plasmon-assisted amplification of electric fields inside the nanoscale assembly. Simultaneously, metal nanocrystals lead to an increase of energy losses during the Foerster transfer process. We derive convenient equations for the energy transfer rates, photoluminescence intensities, and energy dissipation rates in the please of plasmon resonances. Because of strong dissipation due to the metal, an experimental observation of plasmon-enhanced Foerster transfer requires special conditions. As possible experimental methods, we consider cw- and time-resolved photoluminescence studies and describe the conditions to observe plasmon-enhanced transfer. In particular, we show that the photoluminescence spectra should be carefully analyzed since the plasmon-enhanced Foerster effect can appear together with strong exciton energy dissipation. Our results can be applied to a variety of experimental nanoscale systems.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/deecd224005554763deff71a5fe59a412c9d7f5f
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In Electrical and Electronic Engineering
In Electronic, Optical and Magnetic Materials
In Materials Chemistry
Citations in the corpus
- Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy. (2011, background): “However, the efficiency of metal-stimulated non-radiative energy dissipation, η , which is the main channel for the loss of energetic charge carriers in the semiconductor owing to the presence of the metal surface, can be approximated by the Forster resonant energy transfer (FRET) equation, η = ”