Nano Archive

Homogeneous broadening of the zero-optical-phonon spectral line in semiconductor quantum dots

Goupalov, S. V. and Suris, R. A. and Lavallard, P and Citrin, D. S. (2001) Homogeneous broadening of the zero-optical-phonon spectral line in semiconductor quantum dots. Nanotechnology, 12 (4). pp. 518-522.

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Official URL: http://stacks.iop.org/0957-4484/12/518

Abstract

Two different mechanisms of homogeneous broadening of the zero-optical-phonon spectral line in CdSe nanocrystal quantum dots are analysed. The first mechanism is due to modulation of the optical-phonon mode frequencies. The second one is caused by multiple-acoustic-phonon-assisted transitions. We show that homogeneous broadening due to acoustic phonons dominates at low temperatures and for small nanocrystal radii. For large nanocrystal radii and at room temperature, the two mechanisms become comparable.

Item Type:Article
ID Code:681
Deposited By:Prof. Alexey Ivanov
Deposited On:16 Mar 2009 10:41
Last Modified:26 Mar 2009 12:30

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