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Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots
Open accessAbstract
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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Cites
Dabbousi, B. O., Rodriguez-Viejo, J., Mikulec, F. V., Heine, J. R., Mattoussi, H., Ober, R., Jensen, K. F., & Bawendi, M. G. (1997) · The Journal of Physical Chemistry B · doi:10.1021/jp971091y · Cited by 4,229
Cited by
CdSe/CdS/ZnS and CdSe/ZnSe/ZnS Core−Shell−Shell Nanocrystals
Talapin, D. V., Mekis, I., Götzinger, S., Kornowski, A., Benson, O., & Weller, H. (2004) · The Journal of Physical Chemistry B · doi:10.1021/jp046481g · Cited by 757
Self-citationKim, J., Roh, J., Park, M., & Lee, C. (2024) · Advanced Materials · doi:10.1002/adma.202212220 · Cited by 303
Temperature-Dependent Photoluminescence of CdSe-Core CdS/CdZnS/ZnS-Multishell Quantum Dots
Jing, P., Zheng, J., Ikezawa, M., Liu, X., Lv, S., Kong, X., Zhao, J., & Masumoto, Y. (2009) · The Journal of Physical Chemistry C · doi:10.1021/jp902080p · Cited by 270
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Metadata
- Authors
- Baranov, A. V., Rakovich, Y. P., Donegan, J. F., Perova, T. S., Moore, R. A., Talapin, D. V., Rogach, A. L., Masumoto, Y., & Nabiev, I.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2003-10-08
- Volume
- 68
- Issue
- 16
- Pages
- 165306
- ISSN
- 0163-1829 (ISSN-L)
- 1095-3795
- OpenAlex
- W2004426809
- Cited by
- 246
- References
- 1
- FWCI
- 4.66
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Baranov, A. V., Rakovich, Y. P., Donegan, J. F., Perova, T. S., Moore, R. A., Talapin, D. V., Rogach, A. L., Masumoto, Y., & Nabiev, I. (2003). Effect of ZnS shell thickness on the phonon spectra in CdSe quantum dots. Physical Review B. https://doi.org/10.1103/physrevb.68.165306
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