Photoluminescence spectra of quantum dots: Enhanced efficiency of the electron-phonon interaction

Devreese Josef T.; Fomin Vladimir

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DEVREESE, Josef T., FOMIN, Vladimir. Photoluminescence spectra of quantum dots: Enhanced efficiency of the electron-phonon interaction. In: Physica Status Solidi (B) Basic Research, 2001, vol. 224, pp. 609-612. ISSN 0370-1972. DOI: https://doi.org/10.1002/(SICI)1521-3951(200104)224:3<609::AID-PSSB609>3.0.CO;2-D

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Physica Status Solidi (B) Basic Research

Volumul 224 / 2001 / ISSN 0370-1972

Photoluminescence spectra of quantum dots: Enhanced efficiency of the electron-phonon interaction

DOI:https://doi.org/10.1002/(SICI)1521-3951(200104)224:3<609::AID-PSSB609>3.0.CO;2-D

Pag. 609-612

Devreese Josef T.¹, Fomin Vladimir¹², ¹², ¹²

¹ University of Antwerp,
² Moldova State University

Disponibil în IBN: 19 septembrie 2023

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Rezumat

A theory of photoluminescence in semiconductor quantum dots is developed which relies on two key ingredients. First, it takes into account non-adiabaticity of the exciton-phonon system. Second, it includes the multimode dielectric model of LO-phonons and of the electron-phonon interaction in confined systems. The role of non-adiabaticity is shown to be of paramount importance in spherical quantum dots, where the lowest one-exciton state can be degenerate or quasi-degenerate. For various quantum dot structures, the calculated intensities of phonon satellites as a function of temperature, excitation energy and size of quantum dots are in a fair agreement with experimental data on photoluminescence.

Cuvinte-cheie
quantum dots, Gene Conversion, phonon

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