Abstract
The excited state dynamics of core–shell type semiconductor quantum dots (QDs) ofvarious sizes in close contact with a plasmonically active silver thin film has beendemonstrated by using picosecond resolved fluorescence spectroscopy. The non-radiativeenergy transfer from the QDs to the metal surface is found to be of Förster resonance energytransfer (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 electrontransfer from the excited QDs to an organic molecule benzoquinone reveals aninsignificant possibility of charge migration from the QDs to the metallic film.
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