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Published February 2006 | public
Journal Article

Photoinduced Spectral Diffusion and Diffusion-Controlled Electron Transfer Reactions in Fluorescence Intermittency of Quantum Dots

Abstract

An overview is given for the experimental and theoretical development on fluorescence intermittency (blinking) in semiconductor crystalline nanoparticles. We consider a model with photoinduced spectral diffusion and diffusion-controlled electron transfer processes as the underlying mechanism for intermittency in quantum dots. Depending on the frequency response of a dielectric medium, anomalous/normal diffusion in energy space leads to power-law intermittency for single quantum dots and quasi-stretched exponential decay in ensemble-averaged fluorescence intensity. Intricate relationship between single particle and ensemble behavior is discussed. Some kinetic and energetic parameters are linked to the temporal behavior of blinking statistics and ensemble fluorescence decay.

Additional Information

© 2006 The Chemical Society Located in Taipei & Wiley-VCH Verlag. Received October 20, 2005. Article first published online: 25 Sep 2013. The authors acknowledge the support of the National Science Foundation and the Office of Naval Research. J. T. is also thankful for the support from the James W. Glanville Foundation at the California Institute of Technology.

Additional details

Created:
August 22, 2023
Modified:
October 23, 2023