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Solution control of radiative and nonradiative lifetimes: A novel contribution to quantum dot blinking suppression

Fomenko, Vasiliy and Nesbitt, David J. (2008) Solution control of radiative and nonradiative lifetimes: A novel contribution to quantum dot blinking suppression. NANO LETTERS, 8 (1). pp. 287-293.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl0726609

Abstract

Time-correlated single photon counting methods are used with confocal microscopy and maximum likelihood estimation analysis to obtain fluorescence lifetime trajectories for single quantum dots with KHz update rates. This technique reveals that control of the solution environment can influence both radiative (k(rad)) and nonradiative (k(nonrad)) pathways for electron-hole recombination emission in a single quantum dot and provides a novel contribution mechanism to nearly complete suppression of quantum dot blinking, specifically by an increase in k(rad).

Item Type:Article
Subjects:Physical Science > Quantum phenomena
Physical Science > Photonics
ID Code:1833
Deposited By:Farnush Anwar
Deposited On:23 Dec 2008 10:45
Last Modified:23 Dec 2008 10:45

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