Journal of Luminescence, volume 119-120, pages 214-218
Photoluminescence properties related to localized states in colloidal PbS quantum dots
Publication type: Journal Article
Publication date: 2006-07-01
Journal:
Journal of Luminescence
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 3.6
ISSN: 00222313
General Chemistry
Biochemistry
Biophysics
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Abstract
We have investigated photoluminescence (PL) properties of PbS quantum dots (QDs) prepared by a colloidal method. The QDs were dispersed into polyvinyl alcohol films in order to investigate the temperature dependence of optical properties. In the visible region, both absorption and PL peaks are clearly observed. The temperature dependence of the absorption energy in QDs is quite different from that in a bulk crystal; the dependence is quantitatively analyzed by considering a thermal-expansion effect on the quantum confinement in QDs. The PL spectra are composed of three PL bands which are classified into two types. Two PL bands among them with the Stokes shifts of 0.25 and 0.47 eV at 10 K are attributed to the defect-related PL bands, and another with the relatively small Stokes shift of 0.17 eV exhibits characteristics of shallow trapped states in the temperature dependence of PL.
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Citations by publishers
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1 publication, 2.63%
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1 publication, 2.63%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Kim D., Kuwabara T., Nakayama M. Photoluminescence properties related to localized states in colloidal PbS quantum dots // Journal of Luminescence. 2006. Vol. 119-120. pp. 214-218.
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Kim D., Kuwabara T., Nakayama M. Photoluminescence properties related to localized states in colloidal PbS quantum dots // Journal of Luminescence. 2006. Vol. 119-120. pp. 214-218.
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TY - JOUR
DO - 10.1016/j.jlumin.2005.12.033
UR - https://doi.org/10.1016/j.jlumin.2005.12.033
TI - Photoluminescence properties related to localized states in colloidal PbS quantum dots
T2 - Journal of Luminescence
AU - Kim, DaeGwi
AU - Kuwabara, Tetsuya
AU - Nakayama, Masaaki
PY - 2006
DA - 2006/07/01 00:00:00
PB - Elsevier
SP - 214-218
VL - 119-120
SN - 0022-2313
ER -
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@article{2006_Kim,
author = {DaeGwi Kim and Tetsuya Kuwabara and Masaaki Nakayama},
title = {Photoluminescence properties related to localized states in colloidal PbS quantum dots},
journal = {Journal of Luminescence},
year = {2006},
volume = {119-120},
publisher = {Elsevier},
month = {jul},
url = {https://doi.org/10.1016/j.jlumin.2005.12.033},
pages = {214--218},
doi = {10.1016/j.jlumin.2005.12.033}
}