Physical Review B, volume 68, issue 16, publication number 165306

Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots

A. V. Baranov 1
Yury P. Rakovich 2
Yu P Rakovich 2
John F. Donegan 2
J.F. Donegan 2
T. S. PEROVA 3
R. A. Moore 3
Roger Moore 3
D. V. Talapin 4
A L Rogach 5
Y. MASUMOTO 6
I.R. Nabiev 7
I Nabiev 7
Publication typeJournal Article
Publication date2003-10-08
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Abstract
The evolution of the optical phonon spectra of colloidal core/shell CdSe/ZnS quantum dots with an increase of the shell thickness from 0.5 to 3.4 monolayers has been studied by resonant Raman spectroscopy. The results obtained suggest that the ZnS shell changes its structure from amorphous to partly crystalline as the thickness increases. Simultaneously, an increase in Raman scattering by surface (core/shell interface) phonons and the redshift of the corresponding phonon band have been observed and assigned to variations in the shell structure. The disorder present in the shell provides a major contribution to the line shape of the Raman spectra at higher ZnS coverage. A method to control the quality of quantum dots based on Raman spectroscopy is proposed.

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Baranov A. V. et al. Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots // Physical Review B. 2003. Vol. 68. No. 16. 165306
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Baranov A. V., Rakovich Yu. P., Rakovich Y. P., Donegan J., Donegan J. F., PEROVA T. S., Perova T. S., Moore R. A., Moore R., Talapin D. V., Talapin D. V., Rogach A. L., Rogach A. L., MASUMOTO Y., Nabiev I., Nabiev I. Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots // Physical Review B. 2003. Vol. 68. No. 16. 165306
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RIS Copy
TY - JOUR
DO - 10.1103/PhysRevB.68.165306
UR - https://doi.org/10.1103/PhysRevB.68.165306
TI - Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots
T2 - Physical Review B
AU - Baranov, A. V.
AU - Rakovich, Yu P
AU - Donegan, J.F.
AU - PEROVA, T. S.
AU - Moore, R. A.
AU - Talapin, D. V.
AU - Rogach, A L
AU - MASUMOTO, Y.
AU - Nabiev, I
AU - Rakovich, Yury P.
AU - Donegan, John F.
AU - Perova, Tatiana S.
AU - Moore, Roger
AU - Talapin, Dmitri V.
AU - Rogach, Andrey L.
AU - Nabiev, I.R.
PY - 2003
DA - 2003/10/08 00:00:00
PB - American Physical Society (APS)
IS - 16
VL - 68
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex
Cite this
BibTex Copy
@article{2003_Baranov,
author = {A. V. Baranov and Yu P Rakovich and J.F. Donegan and T. S. PEROVA and R. A. Moore and D. V. Talapin and A L Rogach and Y. MASUMOTO and I Nabiev and Yury P. Rakovich and John F. Donegan and Tatiana S. Perova and Roger Moore and Dmitri V. Talapin and Andrey L. Rogach and I.R. Nabiev},
title = {Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots},
journal = {Physical Review B},
year = {2003},
volume = {68},
publisher = {American Physical Society (APS)},
month = {oct},
url = {https://doi.org/10.1103/PhysRevB.68.165306},
number = {16},
doi = {10.1103/PhysRevB.68.165306}
}
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