| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1594165 | Solid State Communications | 2011 | 4 Pages |
Abstract
We investigated multi-phonon processes in two types of CdSe nanocrystals, spherical quantum dots and nanorods by temperature-dependent Raman spectroscopy. We find the anharmonic constants relating to the two- and three-phonon decay channels to systematically change with changing nanocrystal size. The contributions from two-phonon processes decrease with decreasing diameter, while the contributions from higher-order processes increase. The anharmonicities in the vibrational potential increase due to the phonon confinement, and we did not find a shape dependence.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Patryk Kusch, Holger Lange, Mikhail Artemyev, Christian Thomsen,