Atomistic theory of emission from dark excitons in self-assembled quantum dots

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.87.115310
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TypeArticle
Journal titlePhysical Review B - Condensed Matter and Materials Physics
ISSN1098-0121
Volume87
Issue11
Article number115310
AbstractWe present atomistic theory of emission from dark excitons in self-assembled quantum dots. Using the atomistic tight-binding model coupled with the configuration-interaction approach, we calculate the emission spectrum of a dark exciton confined in a single, self-assembled quantum dot. We demonstrate that the dark exciton state is optically active and that it emits photons in the plane of the dot, polarized along its vertical axis. This finite radiative lifetime is due to the mixing of hole subbands and can be tuned over several orders of magnitude by engineering the size and shape of the quantum dot. Published by the American Physical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Security and Disruptive Technologies (SDT-TSR)
Peer reviewedYes
NPARC number21269579
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Record identifier7511fde5-d701-4c45-ab7a-88843b501e10
Record created2013-12-13
Record modified2016-05-09
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