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

Gindele, F, Hild, K, Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023, 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:	Schools > Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	Photon interaction; CdSe/ZnSe; Quantum dots
Publisher:	Elsevier
ISSN:	0022-2313
Last Modified:	28 Oct 2022 08:41
URI:	https://orca.cardiff.ac.uk/id/eprint/71730

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