Inorganic Materials, volume 54, issue 5, pages 413-420
Control over the Size Effect in the Spectroscopic Properties of Zn x Cd1 – xS Colloidal Quantum Dots
Publication type: Journal Article
Publication date: 2018-05-04
Journal:
Inorganic Materials
Quartile SCImago
Q3
Quartile WOS
Q4
Impact factor: 0.8
ISSN: 00201685, 16083172
Materials Chemistry
Metals and Alloys
Inorganic Chemistry
General Chemical Engineering
Abstract
Approaches are developed for controlling the size effect in the absorption and photoluminescence properties of colloidal CdS and Zn0.5Cd0.5S quantum dots (QDs) in a gelatin matrix and thioglycolic acid. We analyze spectroscopic manifestations of dark Ostwald ripening and size-selective photoetching and demonstrate that the illumination of molten colloidal CdS and Zn0.5Cd0.5S QD solutions at a wavelength lying at the optical absorption edge in the presence of hydrogen peroxide as a catalyst for photoetching leads to a blue shift of the optical absorption and photoluminescence spectra of the QDs. Analysis of TEM images of QD samples leads us to conclude that photoetching reduces the average QD size as a consequence of the photodissolution of the CdS and Zn0.5Cd0.5S compounds. We demonstrate that, by contrast, heat treatment of the synthesized CdS and Zn0.5Cd0.5S QD sols at a temperature between 75 and 90°C leads to an increase in nanocrystal size through recrystallization, which shows up as a redshift of the optical absorption and photoluminescence spectra of the corresponding samples.
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Elsevier
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- We do not take into account publications without a DOI.
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- Statistics recalculated weekly.
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Smirnov M. S. et al. Control over the Size Effect in the Spectroscopic Properties of Zn x Cd1 – xS Colloidal Quantum Dots // Inorganic Materials. 2018. Vol. 54. No. 5. pp. 413-420.
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Smirnov M. S., Ovchinnikov O. V., Hazal N. A. R., Zvyagin A. I. Control over the Size Effect in the Spectroscopic Properties of Zn x Cd1 – xS Colloidal Quantum Dots // Inorganic Materials. 2018. Vol. 54. No. 5. pp. 413-420.
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TY - JOUR
DO - 10.1134/s002016851805014x
UR - https://doi.org/10.1134/s002016851805014x
TI - Control over the Size Effect in the Spectroscopic Properties of Zn x Cd1 – xS Colloidal Quantum Dots
T2 - Inorganic Materials
AU - Smirnov, M. S.
AU - Ovchinnikov, O. V.
AU - Hazal, Nassra Amir Razuki
AU - Zvyagin, A. I.
PY - 2018
DA - 2018/05/04 00:00:00
PB - Pleiades Publishing
SP - 413-420
IS - 5
VL - 54
SN - 0020-1685
SN - 1608-3172
ER -
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@article{2018_Smirnov,
author = {M. S. Smirnov and O. V. Ovchinnikov and Nassra Amir Razuki Hazal and A. I. Zvyagin},
title = {Control over the Size Effect in the Spectroscopic Properties of Zn x Cd1 – xS Colloidal Quantum Dots},
journal = {Inorganic Materials},
year = {2018},
volume = {54},
publisher = {Pleiades Publishing},
month = {may},
url = {https://doi.org/10.1134/s002016851805014x},
number = {5},
pages = {413--420},
doi = {10.1134/s002016851805014x}
}
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Smirnov, M. S., et al. “Control over the Size Effect in the Spectroscopic Properties of Zn x Cd1 – xS Colloidal Quantum Dots.” Inorganic Materials, vol. 54, no. 5, May. 2018, pp. 413-420. https://doi.org/10.1134/s002016851805014x.