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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:43 |
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Conference: Bucharest University Faculty of Physics 2006 Meeting
Section: Solid State Physics and Materials Science
Title:
Optical spectra of quantum dots
Authors:
T.O. Cheche (1), M.C. Chang (2)
Affiliation:
(1)University of Bucharest, Faculty of Physics, Bucharest, Romania
(2) National Taiwan Normal University, Department of Physics, Taipei, Taiwan
E-mail
cheche@mail.nctu.edu.tw
tiberiuscheche@yahoo.com
Keywords:
otical spectra, quantum dot
Abstract:
Optical absorption of quantum dot (QD) is investigated by using a non-adiabatic approach (T.O. Cheche, M.C. Chang, Chemical Physics Letters 406, 479 (2005)), in which Fröhlich-type interaction between exciton and longitudinal optical (LO) phonons is assumed. The optical spectra are obtained by using the Fermi golden rule. Our approach predicts accompanying resonances to the usual LO phononic lines, and red shift, and decrease of intensity of the 0PL line with temperature, as observed experimentally.
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