Bulletin of the Russian Academy of Sciences: Physics, volume 86, issue 10, pages 1183-1187
Nonlinear Optical Properties of Colloidal PbS and Ag2S Quantum Dots Passivated with 2-Mercaptopropionic Acid
Publication type: Journal Article
Publication date: 2022-10-26
Q4
SJR: 0.210
CiteScore: 0.9
Impact factor: —
ISSN: 10628738, 19349432
General Physics and Astronomy
Abstract
A Z-scan study is performed of the nonlinear optical response of hydrophilic colloidal PbS and Ag2S quantum dots with average sizes of 2.2 and 2.9 nm, respectively, passivated with 2-mercaptopropionic acid (2-MPA). A Nd3+:YAG laser is used at wavelengths of 355 and 532 nm and a pulse length of 10 ns. It is found that the PbS/2-MPA and Ag2S/2-MPA colloidal solutions exhibit nonlinear refraction (defocusing) at both wavelengths. The saturation character of the dependence of the coefficient of nonlinear absorption on the intensity of laser radiation is revealed. It is established that localized states (e.g., the center of recombination luminescence) are responsible for both nonlinear optical effects.
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Zvyagin A. I. et al. Nonlinear Optical Properties of Colloidal PbS and Ag2S Quantum Dots Passivated with 2-Mercaptopropionic Acid // Bulletin of the Russian Academy of Sciences: Physics. 2022. Vol. 86. No. 10. pp. 1183-1187.
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Zvyagin A. I., Chevychelova T. A., Chirkov K. S., Smirnov M. S., Ovchinnikov O. V. Nonlinear Optical Properties of Colloidal PbS and Ag2S Quantum Dots Passivated with 2-Mercaptopropionic Acid // Bulletin of the Russian Academy of Sciences: Physics. 2022. Vol. 86. No. 10. pp. 1183-1187.
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TY - JOUR
DO - 10.3103/s1062873822100264
UR - https://doi.org/10.3103/s1062873822100264
TI - Nonlinear Optical Properties of Colloidal PbS and Ag2S Quantum Dots Passivated with 2-Mercaptopropionic Acid
T2 - Bulletin of the Russian Academy of Sciences: Physics
AU - Zvyagin, A. I.
AU - Chevychelova, T. A.
AU - Chirkov, K S
AU - Smirnov, M. S.
AU - Ovchinnikov, O. V.
PY - 2022
DA - 2022/10/26
PB - Pleiades Publishing
SP - 1183-1187
IS - 10
VL - 86
SN - 1062-8738
SN - 1934-9432
ER -
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@article{2022_Zvyagin,
author = {A. I. Zvyagin and T. A. Chevychelova and K S Chirkov and M. S. Smirnov and O. V. Ovchinnikov},
title = {Nonlinear Optical Properties of Colloidal PbS and Ag2S Quantum Dots Passivated with 2-Mercaptopropionic Acid},
journal = {Bulletin of the Russian Academy of Sciences: Physics},
year = {2022},
volume = {86},
publisher = {Pleiades Publishing},
month = {oct},
url = {https://doi.org/10.3103/s1062873822100264},
number = {10},
pages = {1183--1187},
doi = {10.3103/s1062873822100264}
}
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Zvyagin, A. I., et al. “Nonlinear Optical Properties of Colloidal PbS and Ag2S Quantum Dots Passivated with 2-Mercaptopropionic Acid.” Bulletin of the Russian Academy of Sciences: Physics, vol. 86, no. 10, Oct. 2022, pp. 1183-1187. https://doi.org/10.3103/s1062873822100264.