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Forster Energy Transfer in Arrays of Epitaxial CdSe/ZnSe Quantum Dots Involving Bright and Dark Excitons
Ioffe Inst, Russia; St Petersburg Acad Univ, Russia.
Ioffe Inst, Russia.
Ioffe Inst, Russia.
Ioffe Inst, Russia.
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2018 (English)In: Physics of the solid state, ISSN 1063-7834, E-ISSN 1090-6460, Vol. 60, no 8, p. 1590-1594Article in journal (Refereed) Published
Abstract [en]

Using time-resolved photoluminescence (PL) spectroscopy, we establish the presence of the Forster energy transfer mechanism between two arrays of epitaxial CdSe/ZnSe quantum dots (QDs) of different sizes. The mechanism operates through dipole-dipole interaction between ground excitonic states of the smaller QDs and excited states of the larger QDs. The dependence of energy transfer efficiency on the width of barrier separating the QD insets is shown to be in line with the Forster mechanism. The temperature dependence of the PL decay times and PL intensity suggests the involvement of dark excitons in the energy transfer process.

Place, publisher, year, edition, pages
PLEIADES PUBLISHING INC , 2018. Vol. 60, no 8, p. 1590-1594
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-150494DOI: 10.1134/S1063783418080176ISI: 000440715600012OAI: oai:DiVA.org:liu-150494DiVA, id: diva2:1241688
Note

Funding Agencies|Russian Science Foundation [14-22-00107]

Available from: 2018-08-24 Created: 2018-08-24 Last updated: 2018-08-24

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