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 Mn2+ ion.
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14 May 2016
Research Article|
May 13 2016
Distributed Bragg reflectors obtained by combining Se and Te compounds: Influence on the luminescence from CdTe quantum dots
J.-G. Rousset;
J.-G. Rousset
a)
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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J. Kobak;
J. Kobak
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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E. Janik;
E. Janik
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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M. Parlinska-Wojtan;
M. Parlinska-Wojtan
2
Institute of Nuclear Physics
, Polish Academy of Sciences, PL-31342 Krakow, Poland
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T. Slupinski;
T. Slupinski
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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A. Golnik;
A. Golnik
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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P. Kossacki;
P. Kossacki
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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M. Nawrocki;
M. Nawrocki
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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W. Pacuski
W. Pacuski
1Faculty of Physics, Institute of Experimental Physics,
University of Warsaw, ul
. Pasteura 5, PL-02-093 Warszawa, Poland
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a)
Electronic mail: [email protected]
J. Appl. Phys. 119, 183105 (2016)
Article history
Received:
November 25 2015
Accepted:
April 29 2016
Citation
J.-G. Rousset, J. Kobak, E. Janik, M. Parlinska-Wojtan, T. Slupinski, A. Golnik, P. Kossacki, M. Nawrocki, W. Pacuski; Distributed Bragg reflectors obtained by combining Se and Te compounds: Influence on the luminescence from CdTe quantum dots. J. Appl. Phys. 14 May 2016; 119 (18): 183105. https://doi.org/10.1063/1.4949325
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