Electron-phonon interaction and the so-called phonon bottleneck effect in semiconductor quantum dots

Whether the phonon bottleneck effect, or slowed relaxation of electrons through phonon emission, in quantum dots is detrimental to their application as optical devices has been a matter of debate. We present a theoretical analysis of the bottleneck effect, based on a second-order perturbation calcul...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 227; no. 1; pp. 373 - 377
Main Authors Inoshita, T., Sakaki, H.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.1996
Subjects
Electron-phonon interaction
Laser
Photoluminescence
Quantum dot
Electron-phonon interaction
Quantum dot
Photoluminescence
Laser
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Summary:Whether the phonon bottleneck effect, or slowed relaxation of electrons through phonon emission, in quantum dots is detrimental to their application as optical devices has been a matter of debate. We present a theoretical analysis of the bottleneck effect, based on a second-order perturbation calculation of the relaxation time and a Green's function calculation of the electron density of states. Emphasis will be put on multiple-phonon and coherence effects. A brief review of the relevant experiments is given in the second part of the paper.
ISSN:0921-4526
1873-2135
DOI:10.1016/0921-4526(96)00445-0