Observation of excited (bi-)exciton and multi-exciton features in locally homogeneous quantum dots

F.P.J. de Groote, T. Lippen, van, J.E.M. Haverkort, R. Nötzel, J.H. Wolter

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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Samenvatting

We investigate micro-photoluminescence spectra of arrays of locally homogeneous quantum dots (QDs). Our spectra indicate that the QDs exhibit excellent homogeneity in size on a length scale extending up to several microns. Using a Hartree–Fock based calculation including Coulomb and exchange energies, the observed spectra can be assigned to excitonic and multi-excitonic transitions, including excited exciton and excited bi-exciton transitions. We explain the strong excited-state recombinations due to the existence of a phonon bottleneck in our strain-free QD-arrays.
Originele taal-2Engels
Pagina's (van-tot)26-30
TijdschriftPhysica E: Low-Dimensional Systems & Nanostructures
Volume17
Nummer van het tijdschrift1-4
DOI's
StatusGepubliceerd - 2003

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