NDLI: Large energy transfer distance to a plane of gold nanoparticles

Content Provider	IEEE Xplore Digital Library
Author	Xia Zhang Gerard, V.A. Gun'ko, Y.K. Lesnyak, V. Gaponik, N. Susha, A.S. Rogach, A.L. Bradley, A.L.
Copyright Year	2012
Description	Author affiliation: Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany (Lesnyak, V.; Gaponik, N.) \|\| School of Chemistry, Trinity College Dublin, Dublin 2, Ireland (Gerard, V.A.; Gun'ko, Y.K.) \|\| Semiconductor Photonics Group, School of Physics, Trinity College Dublin, Dublin 2, Ireland (Xia Zhang; Bradley, A.L.) \|\| Department of Physics and Materials Science & Centre for Functional Photonics (CFP), City University of Hong Kong, Hong Kong, China (Susha, A.S.; Rogach, A.L.)
Abstract	The quenching of emission in proximity to metallic surfaces via non-radiative energy transfer is studied for sensing applications. It can also be used for the measurement of distances on the nanoscale. We report on energy transfer from a plane of CdTe quantum dots (QDs) plane to a plane of gold (Au) nanoparticles. Both photoluminescence (PL) and luminescence lifetime measurements demonstrate that energy transfer efficiency not only depends on plane separation but also Au nanoparticle concentration. Energy transfer to the plane of metal nanoparticles can be considered within the standard Förster resonant energy transfer (FRET) model or the nano-metal surface energy transfer (NSET) model. It is found that both dependences are well described within the model of FRET which shows a $1/d^{4}$ distance dependence and a 1/C Au concentration dependence. However, surprisingly large Förster radii of 10 nm, larger than expected from the spectral overlap of the QD emission and gold localised surface plasmon absorption, are obtained.
Starting Page	1
Ending Page	4
File Size	151505
Page Count	4
File Format	PDF
ISBN	9781467322287
ISSN	21612064
e-ISBN	9781467322294
e-ISBN	9781467322270
DOI	10.1109/ICTON.2012.6254400
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-02
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gold Energy exchange Absorption Optical surface waves Nanocrystals surface plasmons Förster resonant energy transfer nanocrystal quantum dots Au nanoparticles time-resolved emission decay
Content Type	Text
Resource Type	Article

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