The Spectra and Lifetimes of Electrons, Holes, and Excitons in Open Cylindrical Quantum Dots Embedded Into Quantum Wires or Wells

Gryschyк, А. М. and Maкhanets, О. М. (2005) The Spectra and Lifetimes of Electrons, Holes, and Excitons in Open Cylindrical Quantum Dots Embedded Into Quantum Wires or Wells. Ukr. J. Phys., 50 (12). pp. 1389-1396. ISSN 0503-1265

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Abstract

The spectra and lifetimes of an electron, a hole, and an exciton in open cylindrical quantum dots (QDs) embedded into various environments — a cylindrical quantum wire (QW) and a plane quantum well which, in their turn, are located in a massive three-dimensional medium — have been studied theoretically. The relevant calculations were carried out in the framework of the effective mass approximation and for a rectangular potential. The analytical expression for the scattering matrix (S-matrix) has been obtained. The real part of the S-matrix pole defines the energy of a quasi-stationary state, while the imaginary one defines its halfwidth and, accordingly, the lifetime of a quasiparticle in this state. Numerical calculations of the spectra and lifetimes of an electron, a hole, and an exciton were carried out for nanoheterosystems composed on the basis of semiconductors ¯- HgS and ¯-CdS.

Item Type: Article
Uncontrolled Keywords: electron, exiton, spectra
Subjects: Q Science > QC Physics
Divisions: Faculty of Physics and Mathematics > Department of Physics
Depositing User: доцент, к.ф.-м.н, Андрій / А.М. Грищук
Date Deposited: 27 Feb 2012 13:26
Last Modified: 15 Aug 2015 00:40
URI: http://eprints.zu.edu.ua/id/eprint/6587

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