A.V. Baranov, Yu. P. Rakovich, and J. F. Donegan, T. S. Perova, R.A. Moore, D.V. Talapin, A.L. Rogach, Y.Masumoto, and I. Nabiev ‘Effect of ZnS Shell Thickness on the Phonon Spectra in CdSe Quantum Dots’ in Physical Review B, 68, (16), 2003, pp 1 - 7
Physical Review B 68 16
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
Please note: There is a known bug in some browsers that causes an
error when a user tries to view large pdf file within the browser window.
If you receive the message "The file is damaged and could not be
repaired", please try one of the solutions linked below based on the
browser you are using.
Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.