Journal of Luminescence, volume 198, pages 357-363
Thermostimulated luminescence of colloidal Ag2S quantum dots
Publication type: Journal Article
Publication date: 2018-06-01
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
The solution of the problem of investigating the energy structure of trap states and photophysical processes with their participation is necessary for the effective application of colloidal Ag2S quantum dots. These studies are important both for finding ways to increase the quantum yield of luminescence, and for the effective using of non-luminescent trap states in photocatalysis applications. In this paper, Ag2S quantum dots prepared with an aqueous synthesis in a gelatin matrix were investigated. The investigated Ag2S quantum dots have average sizes of 2.2 ± 0.3 nm, 2.5 ± 0.5 nm and 3.6 ± 0.5 nm, according to TEM data, and size-dependent spectra of UV–Vis absorption and photoluminescence. Temperature dependencies of IR recombination luminescence (1200–1250 nm) for ensembles of colloidal Ag2S quantum dots, dispersed in gelatin, were investigated. Thermostimulated luminescence, appearing under the variation of temperature and continuous photoexcitation of colloidal Ag2S quantum dots, was detected. The peak of thermoluminescence was found in the temperature region of 120–240 K, which consists of two components. Energies of activation of thermoluminescence and temperature quenching of IR luminescence were determined. The activation energy is in the region of 0.05–0.11 eV. And the energy of temperature quenching of IR luminescence is at 0.06–0.10 eV.
Top-30
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Citations by publishers
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5 publications, 17.86%
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1 publication, 3.57%
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IOP Publishing
1 publication, 3.57%
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Wiley
1 publication, 3.57%
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American Chemical Society (ACS)
1 publication, 3.57%
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Trans Tech Publications
1 publication, 3.57%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 3.57%
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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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Perepelitsa A. S. et al. Thermostimulated luminescence of colloidal Ag2S quantum dots // Journal of Luminescence. 2018. Vol. 198. pp. 357-363.
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Perepelitsa A. S., Smirnov M., Ovchinnikov O., Latyshev A., Kotko A. S. Thermostimulated luminescence of colloidal Ag2S quantum dots // Journal of Luminescence. 2018. Vol. 198. pp. 357-363.
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TY - JOUR
DO - 10.1016/j.jlumin.2018.02.009
UR - https://doi.org/10.1016/j.jlumin.2018.02.009
TI - Thermostimulated luminescence of colloidal Ag2S quantum dots
T2 - Journal of Luminescence
AU - Perepelitsa, Aleksey S.
AU - Smirnov, Mikhail
AU - Ovchinnikov, O.V.
AU - Latyshev, A.N.
AU - Kotko, A S
PY - 2018
DA - 2018/06/01 00:00:00
PB - Elsevier
SP - 357-363
VL - 198
SN - 0022-2313
ER -
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@article{2018_Perepelitsa,
author = {Aleksey S. Perepelitsa and Mikhail Smirnov and O.V. Ovchinnikov and A.N. Latyshev and A S Kotko},
title = {Thermostimulated luminescence of colloidal Ag2S quantum dots},
journal = {Journal of Luminescence},
year = {2018},
volume = {198},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.jlumin.2018.02.009},
pages = {357--363},
doi = {10.1016/j.jlumin.2018.02.009}
}