Mapping emissive channels of quantum dots: Influence of size and environment on energy transfer in the time domain

E. Faulques; F. Massuyeau; Q. Wang; Dong Seo; S. Jobic

doi:10.1063/1.3497269

Mapping emissive channels of quantum dots: Influence of size and environment on energy transfer in the time domain

E. Faulques
, F. Massuyeau
, Q. Wang
, Dong Seo
, S. Jobic

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In the quantum confinement regime, the time-resolved photoluminescence mapping of CdSe nanocrystals reveals unusual size-dependent characteristics in solute or solid-state environments. The former case typifies long-lived intradot exciton recombinations, while in the latter energy-dependent Kohlrausch relaxations quench luminescence via interdot energy transfer. The observed energy transfer rate increases for larger size (1.5× 10⁸ s ^-1 for d=2.5 nm and 6.4× 10⁸ s^-1 for d=10 nm).

Original language	English (US)
Article number	153111
Journal	Applied Physics Letters
Volume	97
Issue number	15
DOIs	https://doi.org/10.1063/1.3497269
State	Published - Oct 11 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3497269

Cite this

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title = "Mapping emissive channels of quantum dots: Influence of size and environment on energy transfer in the time domain",

abstract = "In the quantum confinement regime, the time-resolved photoluminescence mapping of CdSe nanocrystals reveals unusual size-dependent characteristics in solute or solid-state environments. The former case typifies long-lived intradot exciton recombinations, while in the latter energy-dependent Kohlrausch relaxations quench luminescence via interdot energy transfer. The observed energy transfer rate increases for larger size (1.5× 108 s -1 for d=2.5 nm and 6.4× 108 s-1 for d=10 nm).",

author = "E. Faulques and F. Massuyeau and Q. Wang and Dong Seo and S. Jobic",

note = "Funding Information: This work was supported by CNRS and by Minist{\`e}re de l{\textquoteright}Education Nationale, de l{\textquoteright}Enseignement Sup{\'e}rieur et de la Recherche. D.-K.S. is indebted to Region des Pays de Loire for his one month sabbatical stay at the Institut des Mat{\'e}riaux Jean Rouxel. The authors acknowledge N. Gautier for performing the TEM experiments.",

year = "2010",

month = oct,

day = "11",

doi = "10.1063/1.3497269",

language = "English (US)",

volume = "97",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Mapping emissive channels of quantum dots

T2 - Influence of size and environment on energy transfer in the time domain

AU - Faulques, E.

AU - Massuyeau, F.

AU - Wang, Q.

AU - Seo, Dong

AU - Jobic, S.

N1 - Funding Information: This work was supported by CNRS and by Ministère de l’Education Nationale, de l’Enseignement Supérieur et de la Recherche. D.-K.S. is indebted to Region des Pays de Loire for his one month sabbatical stay at the Institut des Matériaux Jean Rouxel. The authors acknowledge N. Gautier for performing the TEM experiments.

PY - 2010/10/11

Y1 - 2010/10/11

N2 - In the quantum confinement regime, the time-resolved photoluminescence mapping of CdSe nanocrystals reveals unusual size-dependent characteristics in solute or solid-state environments. The former case typifies long-lived intradot exciton recombinations, while in the latter energy-dependent Kohlrausch relaxations quench luminescence via interdot energy transfer. The observed energy transfer rate increases for larger size (1.5× 108 s -1 for d=2.5 nm and 6.4× 108 s-1 for d=10 nm).

AB - In the quantum confinement regime, the time-resolved photoluminescence mapping of CdSe nanocrystals reveals unusual size-dependent characteristics in solute or solid-state environments. The former case typifies long-lived intradot exciton recombinations, while in the latter energy-dependent Kohlrausch relaxations quench luminescence via interdot energy transfer. The observed energy transfer rate increases for larger size (1.5× 108 s -1 for d=2.5 nm and 6.4× 108 s-1 for d=10 nm).

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DO - 10.1063/1.3497269

M3 - Article

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SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 15

M1 - 153111

ER -

Mapping emissive channels of quantum dots: Influence of size and environment on energy transfer in the time domain

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