Journal of Physical Chemistry C, volume 112, issue 29, pages 10668-10673
Temperature Dependence of Photoluminescence Dynamics in Colloidal CdS Quantum Dots
Publication type: Journal Article
Publication date: 2008-06-26
Journal:
Journal of Physical Chemistry C
Q1
Q3
SJR: 0.957
CiteScore: 6.5
Impact factor: 3.3
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
We have investigated the temperature dependence of photoluminescence (PL) dynamics in CdS quantum dots (QDs) prepared by a colloidal method. A size-selective photoetching process and a surface modification technique with a Cd(OH)2 layer enabled us to prepare size-controlled CdS QDs with high PL efficiency. The PL decay profiles became slower with an increase in temperature, contrary to an ordinary behavior. We have revealed that such anomalous temperature dependence of the PL-decay profile is explained by a three-state model consisting of a ground-state and two excited states: a lower-lying bound-exciton state and a higher-lying free-exciton state (the “dark-exciton state”) having an optically inactive triplet nature.
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GOST
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Kim D. et al. Temperature Dependence of Photoluminescence Dynamics in Colloidal CdS Quantum Dots // Journal of Physical Chemistry C. 2008. Vol. 112. No. 29. pp. 10668-10673.
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Kim D., Mishima T., Tomihira K., Nakayama M. Temperature Dependence of Photoluminescence Dynamics in Colloidal CdS Quantum Dots // Journal of Physical Chemistry C. 2008. Vol. 112. No. 29. pp. 10668-10673.
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RIS
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TY - JOUR
DO - 10.1021/jp8009172
UR - https://doi.org/10.1021/jp8009172
TI - Temperature Dependence of Photoluminescence Dynamics in Colloidal CdS Quantum Dots
T2 - Journal of Physical Chemistry C
AU - Kim, DaeGwi
AU - Mishima, T.
AU - Tomihira, K
AU - Nakayama, M.
PY - 2008
DA - 2008/06/26
PB - American Chemical Society (ACS)
SP - 10668-10673
IS - 29
VL - 112
SN - 1932-7447
SN - 1932-7455
ER -
Cite this
BibTex (up to 50 authors)
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@article{2008_Kim,
author = {DaeGwi Kim and T. Mishima and K Tomihira and M. Nakayama},
title = {Temperature Dependence of Photoluminescence Dynamics in Colloidal CdS Quantum Dots},
journal = {Journal of Physical Chemistry C},
year = {2008},
volume = {112},
publisher = {American Chemical Society (ACS)},
month = {jun},
url = {https://doi.org/10.1021/jp8009172},
number = {29},
pages = {10668--10673},
doi = {10.1021/jp8009172}
}
Cite this
MLA
Copy
Kim, DaeGwi, et al. “Temperature Dependence of Photoluminescence Dynamics in Colloidal CdS Quantum Dots.” Journal of Physical Chemistry C, vol. 112, no. 29, Jun. 2008, pp. 10668-10673. https://doi.org/10.1021/jp8009172.