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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/49308

Title: Energy transfer in colloidal CdTe quantum dot nanoclusters
Author: BRADLEY, LOUISE
GERARD, VALERIE
GOUNKO, IOURI
LUNZ, MANUELA
Sponsor: Science Foundation Ireland
Author's Homepage: http://people.tcd.ie/bradlel
http://people.tcd.ie/igounko
http://people.tcd.ie/lunzm
Keywords: Optics
Quantum dot (QD) nanoclusters
Issue Date: 2010
Citation: Clare Higgins, Manuela Lunz, A. Louise Bradley, Valerie A. Gerard, Stephen Byrne, Yurii K. Gun ko, Vladimir Lesnyak, and Nikolai Gaponik, Energy transfer in colloidal CdTe quantum dot nanoclusters, Optics Express, 18, 24, 2010, 24486-24494
Series/Report no.: Optics Express
18
24
Abstract: Quantum dot (QD) nanoclusters were formed using oppositely charged colloidal CdTe QDs, of two different sizes, mixed in aqueous solutions. The photoluminescence (PL) spectra and time-resolved PL decays show signatures of Förster resonant energy transfer (FRET) from the donor QDs to the acceptor QD in the nanoclusters. A concentration dependence of the donor QD lifetime is observed in mixed solutions with a donor: acceptor ratio greater than 1:1. The concentration dependent time-resolved PL data indicate different regimes of cluster formation, with evidence for donor-to-donor FRET in the larger donor-acceptor nanoclusters and evidence for the formation of all-donor clusters in mixed solutions with high donor concentrations.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/49308
Related links: http://www.opticsinfobase.org/abstract.cfm?URI=oe-18-24-24486
Appears in Collections:Physics (Scholarly Publications)

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