Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots

Time-resolved single-nanoparticle spectroscopy has been carried out to examine the luminescence characteristics of individual CdSe/ZnS core/shell quantum dots. In particular, the possible correlations between emission intensity, lifetime, spectrum, and polarization fluctuations have been investigate...

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Detalles Bibliográficos
Autores principales: Montiel, Daniel, Yang, Haw
Formato: Texto
Lenguaje:English
Publicado: American Chemical Society 2008
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2646884/
https://www.ncbi.nlm.nih.gov/pubmed/18693717
http://dx.doi.org/10.1021/jp802317a
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author Montiel, Daniel
Yang, Haw
author_facet Montiel, Daniel
Yang, Haw
author_sort Montiel, Daniel
collection PubMed
description Time-resolved single-nanoparticle spectroscopy has been carried out to examine the luminescence characteristics of individual CdSe/ZnS core/shell quantum dots. In particular, the possible correlations between emission intensity, lifetime, spectrum, and polarization fluctuations have been investigated. The emission polarization was found to be correlated with the luminescence intensity in a nonlinear way. The low-emissive states were found to correlate with red-shifted spectrum, increased nonradiative decay, and low degree of emission polarization. The observations are consistent with the model that charged quantum dots can be emissive.
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spelling pubmed-26468842009-03-20 Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots Montiel, Daniel Yang, Haw J Phys Chem A Time-resolved single-nanoparticle spectroscopy has been carried out to examine the luminescence characteristics of individual CdSe/ZnS core/shell quantum dots. In particular, the possible correlations between emission intensity, lifetime, spectrum, and polarization fluctuations have been investigated. The emission polarization was found to be correlated with the luminescence intensity in a nonlinear way. The low-emissive states were found to correlate with red-shifted spectrum, increased nonradiative decay, and low degree of emission polarization. The observations are consistent with the model that charged quantum dots can be emissive. American Chemical Society 2008-08-12 2008-10-02 /pmc/articles/PMC2646884/ /pubmed/18693717 http://dx.doi.org/10.1021/jp802317a Text en Copyright © 2008 American Chemical Society http://pubs.acs.org This is an open-access article distributed under the ACS AuthorChoice Terms & Conditions. Any use of this article, must conform to the terms of that license which are available at http://pubs.acs.org. 40.75
spellingShingle Montiel, Daniel
Yang, Haw
Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots
title Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots
title_full Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots
title_fullStr Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots
title_full_unstemmed Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots
title_short Observation of Correlated Emission Intensity and Polarization Fluctuations in Single CdSe/ZnS Quantum Dots
title_sort observation of correlated emission intensity and polarization fluctuations in single cdse/zns quantum dots
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2646884/
https://www.ncbi.nlm.nih.gov/pubmed/18693717
http://dx.doi.org/10.1021/jp802317a
work_keys_str_mv AT montieldaniel observationofcorrelatedemissionintensityandpolarizationfluctuationsinsinglecdseznsquantumdots
AT yanghaw observationofcorrelatedemissionintensityandpolarizationfluctuationsinsinglecdseznsquantumdots

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