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Author Rousset, J. -G. ♦ Kobak, J. ♦ Janik, E. ♦ Slupinski, T. ♦ Golnik, A. ♦ Kossacki, P. ♦ Nawrocki, M. ♦ Pacuski, W. ♦ Parlinska-Wojtan, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ BRAGG REFLECTION ♦ BUFFERS ♦ CADMIUM TELLURIDES ♦ CAVITIES ♦ DEPOSITION ♦ EXTRACTION ♦ GEOMETRY ♦ LINE BROADENING ♦ LUMINESCENCE ♦ MANGANESE IONS ♦ OPTICAL PROPERTIES ♦ QUANTUM DOTS ♦ ZINC TELLURIDES
Abstract We report on the optical properties of structures containing self assembled CdTe quantum dots (QDs) combined with Te and Se based distributed Bragg reflectors either in a half cavity geometry with a relatively broad cavity mode or in a full cavity geometry where the cavity mode is much narrower. We show that for both structures the extraction coefficient of the light emitted from the QDs ensemble is enhanced by more than one order of magnitude with respect to the QDs grown on a ZnTe buffer. However, a single QD line broadening is observed and attributed to an unintentional incorporation of Se in the vicinity of the CdTe QDs. We show that postponing the QDs growth for 24 h after the distributed Bragg reflector deposition allows recovering sharp emission lines from individual QDs. This two step growth method is proven to be efficient also for the structures with CdTe QDs containing a single Mn{sup 2+} ion.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-14
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 119
Issue Number 18


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