Optical and Quantum Electronics, volume 55, issue 5, publication number 433
Size effect features and mechanism of luminescence of colloidal PbS quantum dots, passivated with thioglicolic acid
Irina Grevtseva
1
,
Tamara Chevychelova
1
,
Oleg Ovchinnikov
1
,
Mikhail Smirnov
1, 2
,
Tamara Kondratenko
1
,
Vladimir Khokhlov
1
,
Andrey Zvyagin
1
,
Marina Astashkina
1
,
Kirill Chirkov
1
1
Department of Optics and Spectroscopy, Voronezh State Uneversity, Voronezh, Russia
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Publication type: Journal Article
Publication date: 2023-03-17
Journal:
Optical and Quantum Electronics
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 3
ISSN: 03068919, 1572817X
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Abstract
This paper presents new regularities of the size effect in IR luminescence of semiconductor colloidal PbS quantum dots, passivated with thioglycolic acid molecules (PbS/TGA QDs). It was found that decrease in the average PbS/TGA QDs size of the sample from 4.9 nm to 2.6 nm produces the luminescence peak shifts from 1350 nm to 865 nm. At that time, in the excitation spectrum the peak due to exciton absorption shifts from 1235 nm to 707 nm. The Stokes shift increases from 0.086 to 0.32 eV. The study of time-resolved luminescence showed that the luminescence decay is complex non-exponential it, that is determined by the statistical distribution of luminescence quenchers in PbS/TGA QDs over the ensemble. The complex of the obtained experimental results made it possible to conclude that the observed luminescence is determined by the radiative annihilation of exciton in PbS/TGA QDs.
Top-30
Citations by journals
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1
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Inorganic Materials
1 publication, 50%
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Russian Chemical Reviews
1 publication, 50%
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1
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Citations by publishers
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1
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Pleiades Publishing
1 publication, 50%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 50%
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1
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Grevtseva I. et al. Size effect features and mechanism of luminescence of colloidal PbS quantum dots, passivated with thioglicolic acid // Optical and Quantum Electronics. 2023. Vol. 55. No. 5. 433
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Grevtseva I., Chevychelova T., Ovchinnikov O., Smirnov M., Kondratenko T., Khokhlov V., Zvyagin A., Astashkina M., Chirkov K. Size effect features and mechanism of luminescence of colloidal PbS quantum dots, passivated with thioglicolic acid // Optical and Quantum Electronics. 2023. Vol. 55. No. 5. 433
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TY - JOUR
DO - 10.1007/s11082-023-04658-3
UR - https://doi.org/10.1007/s11082-023-04658-3
TI - Size effect features and mechanism of luminescence of colloidal PbS quantum dots, passivated with thioglicolic acid
T2 - Optical and Quantum Electronics
AU - Grevtseva, Irina
AU - Chevychelova, Tamara
AU - Ovchinnikov, Oleg
AU - Smirnov, Mikhail
AU - Kondratenko, Tamara
AU - Khokhlov, Vladimir
AU - Zvyagin, Andrey
AU - Astashkina, Marina
AU - Chirkov, Kirill
PY - 2023
DA - 2023/03/17 00:00:00
PB - Springer Nature
IS - 5
VL - 55
SN - 0306-8919
SN - 1572-817X
ER -
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@article{2023_Grevtseva,
author = {Irina Grevtseva and Tamara Chevychelova and Oleg Ovchinnikov and Mikhail Smirnov and Tamara Kondratenko and Vladimir Khokhlov and Andrey Zvyagin and Marina Astashkina and Kirill Chirkov},
title = {Size effect features and mechanism of luminescence of colloidal PbS quantum dots, passivated with thioglicolic acid},
journal = {Optical and Quantum Electronics},
year = {2023},
volume = {55},
publisher = {Springer Nature},
month = {mar},
url = {https://doi.org/10.1007/s11082-023-04658-3},
number = {5},
doi = {10.1007/s11082-023-04658-3}
}