Optics and Spectroscopy, volume 131, issue 1, pages 96
Kinetics of luminescence decay of nanocrystals: physical models and approximation by a sum of three exponential functions
Publication type: Journal Article
Publication date: 2023-05-04
Journal:
Optics and Spectroscopy
Quartile SCImago
— Quartile WOS
Q4
Impact factor: 0.60
ISSN: 27826694
Abstract
The measurement of the kinetics of luminescence decay of nanocrystals (NCs) --- quantum dots (QDs), nanowires, nanoplates and quantum rings --- is an important tool for studying the photodynamics of their excited states, that allows identifying the type and number of traps for charge carriers (electrons, holes) or acceptors of excitation energy (molecules, other QDs) located on the surface or near the NCs, as well as to estimate the energy of traps and to determine the mechanism of transfer of the energy of electronic excitation from the NCs to acceptors. Usually, the kinetics of luminescence decay is approximated by a sum of two or three exponential functions. In this case, the fitting parameters are the amplitudes and decay times of the exponential components. This paper analyzes the experimental conditions under which such an approximation has a clear physical meaning (long-range nonradiative energy transfer, contact quenching of luminescence, reversible trapping of charge carriers), and establishes a relationship between the fitting parameters. Keywords: nanocrystals, kinetics of luminescence decay, approximation by a sum of three exponential functions.
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Russian Chemical Reviews
1 publication, 100%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 100%
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Bodunov E. N. Kinetics of luminescence decay of nanocrystals: physical models and approximation by a sum of three exponential functions // Optics and Spectroscopy. 2023. Vol. 131. No. 1. p. 96.
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Bodunov E. N. Kinetics of luminescence decay of nanocrystals: physical models and approximation by a sum of three exponential functions // Optics and Spectroscopy. 2023. Vol. 131. No. 1. p. 96.
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TY - JOUR
DO - 10.21883/eos.2023.01.55524.91-22
UR - https://doi.org/10.21883/eos.2023.01.55524.91-22
TI - Kinetics of luminescence decay of nanocrystals: physical models and approximation by a sum of three exponential functions
T2 - Optics and Spectroscopy
AU - Bodunov, E N
PY - 2023
DA - 2023/05/04 00:00:00
PB - Ioffe Physical-Technical Institute of the Russian Academy of Sciences
SP - 96
IS - 1
VL - 131
SN - 2782-6694
ER -
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@article{2023_Bodunov,
author = {E N Bodunov},
title = {Kinetics of luminescence decay of nanocrystals: physical models and approximation by a sum of three exponential functions},
journal = {Optics and Spectroscopy},
year = {2023},
volume = {131},
publisher = {Ioffe Physical-Technical Institute of the Russian Academy of Sciences},
month = {may},
url = {https://doi.org/10.21883/eos.2023.01.55524.91-22},
number = {1},
pages = {96},
doi = {10.21883/eos.2023.01.55524.91-22}
}
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Bodunov, E. N.. “Kinetics of luminescence decay of nanocrystals: physical models and approximation by a sum of three exponential functions.” Optics and Spectroscopy, vol. 131, no. 1, May. 2023, p. 96. https://doi.org/10.21883/eos.2023.01.55524.91-22.