Open Access
Optical Materials Express, volume 7, issue 2, pages 354
Temperature-induced shift of the exciton absorption band in InP/ZnS quantum dots
Publication type: Journal Article
Publication date: 2017-01-06
Journal:
Optical Materials Express
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 2.8
ISSN: 21593930, 21593930
Electronic, Optical and Magnetic Materials
Abstract
Using the second-order derivative spectrophotometry method, we have determined the energy of optical transitions of colloidal InP/ZnS core-shell quantum dots at room temperature: E1 = 2.60 eV corresponds to a first exciton absorption peak of the InP core, E2 = 4.70 eV appears to meet the processes in the ZnS shell. We have investigated E1(T) temperature dependence within 6.5 – 296 K range for the first time. The obtained experimental data have been approximated by means of a linear model and Fan’s expression. Also, it has been shown that the interaction between excitons and longitudinal acoustic phonons causes the energy E1 to change with temperature. In this case, the peak’s FWHM remains invariant and amounts to 0.39 eV, which indicates the inhomogeneous broadening character and a high degree of static disorder in the ensemble of the quantum dots studied.
Top-30
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Citations by publishers
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1 publication, 5.88%
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- We do not take into account publications without a DOI.
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Savchenko S. S., Vokhmintsev A. S., Weinstein I. A. Temperature-induced shift of the exciton absorption band in InP/ZnS quantum dots // Optical Materials Express. 2017. Vol. 7. No. 2. p. 354.
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Savchenko S. S., Vokhmintsev A. S., Weinstein I. A. Temperature-induced shift of the exciton absorption band in InP/ZnS quantum dots // Optical Materials Express. 2017. Vol. 7. No. 2. p. 354.
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TY - JOUR
DO - 10.1364/ome.7.000354
UR - https://doi.org/10.1364/ome.7.000354
TI - Temperature-induced shift of the exciton absorption band in InP/ZnS quantum dots
T2 - Optical Materials Express
AU - Savchenko, S. S.
AU - Vokhmintsev, A S
AU - Weinstein, I. A.
PY - 2017
DA - 2017/01/06 00:00:00
PB - Optical Society of America
SP - 354
IS - 2
VL - 7
SN - 2159-3930
SN - 2159-3930
ER -
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@article{2017_Savchenko,
author = {S. S. Savchenko and A S Vokhmintsev and I. A. Weinstein},
title = {Temperature-induced shift of the exciton absorption band in InP/ZnS quantum dots},
journal = {Optical Materials Express},
year = {2017},
volume = {7},
publisher = {Optical Society of America},
month = {jan},
url = {https://doi.org/10.1364/ome.7.000354},
number = {2},
pages = {354},
doi = {10.1364/ome.7.000354}
}
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Savchenko, S. S., et al. “Temperature-induced shift of the exciton absorption band in InP/ZnS quantum dots.” Optical Materials Express, vol. 7, no. 2, Jan. 2017, p. 354. https://doi.org/10.1364/ome.7.000354.