Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots
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Beyler-2013-Direct observation of.pdf
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Author(s)
Marshall, Lisa F.
Cui, Jian
Brokmann, Xavier
Bawendi, Moungi G.
Beyler, Andrew Paul
Date Issued
October 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Beyler, Andrew P., Lisa F. Marshall, Jian Cui, Xavier Brokmann, and Moungi G. Bawendi. “Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots.” Physical Review Letters 111, no. 17 (October 2013). © 2013 American Physical Society
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Final published version
Abstract
We measure the anomalous spectral diffusion of single colloidal quantum dots over eight temporal decades simultaneously by combining single-molecule spectroscopy and photon-correlation Fourier spectroscopy. Our technique distinguishes between discrete and continuous dynamics and directly reveals that the quasicontinuous spectral diffusion observed using conventional spectroscopy is composed of rapid, discrete spectral jumps. Despite their multiple time scales, these dynamics can be captured by a single mechanism whose parameters vary widely between dots and over time in individual dots.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.111.177401
