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Phonon interaction of single excitons in CdSe/ZnSe quantum dot structures

Gindele, F, Hild, K, Langbein, Wolfgang Werner, Woggon, U, Leonardi, K, Hommel, D, Kümmell, T, Bacher, G and Forchel, A 1999. Phonon interaction of single excitons in CdSe/ZnSe quantum dot structures. Journal of Luminescence 83-84 , pp. 305-308. 10.1016/S0022-2313(99)00116-7

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Abstract

In epitaxially grown CdSe quantum dots the LO-phonon coupling is studied by analysing phonon-assisted recombination of a single zero-dimensional exciton. Due to the microscopic disorder of Cd-ions the observed line shape of the LO-phonon replica shows an inhomogeneous broadening and cannot be described by a single Lorentzian peaking at one distinct phonon energy. With increasing excitation density, the radiative decay of biexcitons with a binding energy of 22 meV is observed. Both exciton and corresponding biexciton reveal LO-phonon replica intensities of ∼3% of the respective zero-phonon emission.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Photon interaction; CdSe/ZnSe; Quantum dots
Publisher: Elsevier
ISSN: 0022-2313
Last Modified: 04 Jun 2017 08:01
URI: http://orca-mwe.cf.ac.uk/id/eprint/71730

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