Published May 13, 2011
| public
Journal Article
Ultrafast dynamics of excitons in semiconductor quantum dots on a plasmonically active nano-structured silver film
Abstract
The excited state dynamics of core–shell type semiconductor quantum dots (QDs) of various sizes in close contact with a plasmonically active silver thin film has been demonstrated by using picosecond resolved fluorescence spectroscopy. The non-radiative energy transfer from the QDs to the metal surface is found to be of Förster resonance energy transfer (FRET) type rather than the widely expected nano-surface energy transfer (NSET) type. The slower rate of energy transfer processes compared to that of the electron transfer from the excited QDs to an organic molecule benzoquinone reveals an insignificant possibility of charge migration from the QDs to the metallic film.
Additional Information
© 2011 IOP Publishing Ltd. Received 23 November 2010, in final form 9 February 2011. Published 23 March 2011. SB and AM thank CSIR for the fellowships. We thank DST for financial grants SR/SO/BB-15/2007.Additional details
- Eprint ID
- 23431
- DOI
- 10.1088/0957-4484/22/19/195704
- Resolver ID
- CaltechAUTHORS:20110422-154055865
- SR/SO/BB-15/2007
- Department of Science and Technology (DST) (India)
- Council of Scientific and Industrial Research (CSIR) (India)
- Created
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2011-04-25Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field