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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/57

Title: Ultrafast dynamics of excitons in semiconductor quantum dots on a plasmonically active nano-structured silver film
Authors: Batabyal, Subrata
Makhal, Abhinandan
Das, K
Raychaudhuri, A K
Pal, Samir K
Issue Date: 2012
Publisher: Nanotechnology
Citation: S. Batabyal, A. Makhal, K. Das, A. K. Raychaudhuri and S. K. Pal, Ultrafast dynamics of excitons in semiconductor quantum dots on a plasmonically active nano-structured silver film, Nanotechnology, 2012, 22, 195704
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 Forster 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.
URI: http://hdl.handle.net/123456789/57
Appears in Collections:2012

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