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Proceedings Paper

Superlinearity and temperature dependence of electroluminescence in heterostructures with deep AlSb/InAs1-x Sbx /AlSb quantum well
Author(s): Maya Mikhailova; Edward Ivanov; Leonid Danilov; Andrei Petukhov; Karina Kalinina; Nikolai Stoyanov; Yuri Yakovlev; Alice Hospodková; Jiri Pangrác; Jiri Oswald; Marketa Ziková; Edward Hulicius
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Paper Abstract

We report on superlinear electroluminescent structures based on AlSb/InAs1-xSbx/AlSb deep quantum well grown by MOVPE on n-GaSb:Te substrate. Dependence of the electroluminescence (EL) spectra and optical power on the drive current in nanoheterostructures with AlSb/InAs1-xSbx/AlSb quantum well at 77 – 300 K temperature range was studied. Intensive two-band superlinear EL in the 0.5 - 0.8 eV photon energy range was observed. Optical power enhancement with the increasing drive current at room temperature is caused by the contribution of the additional electron-hole pairs due to the impact ionization by the electrons heated at the high band offset between AlSb and the first electron level Ee1 in the InAsSb QW. Study of the EL temperature dependence at 90 – 300 K range enabled us to define the role of the first and second heavy hole levels in the radiative recombination process. It was shown that with the temperature decrease, the relation between the energies of the valence band offset and the second heavy hole energy level changes due to the temperature transformation of the energy band diagram. That is why the EL spectrum revealed radiative transitions from the first electron level Ee1 to the first hole level Eh1 in the whole temperature range (90 – 300 K) while the emission band related with the transitions to the second hole level occurred only at T < 200 K.

Paper Details

Date Published: 6 January 2015
PDF: 10 pages
Proc. SPIE 9450, Photonics, Devices, and Systems VI, 94500J (6 January 2015); doi: 10.1117/12.2069903
Show Author Affiliations
Maya Mikhailova, Ioffe Physical-Technical Institute (Russian Federation)
Edward Ivanov, Ioffe Physical-Technical Institute (Russian Federation)
Leonid Danilov, Ioffe Physical-Technical Institute (Russian Federation)
Andrei Petukhov, Ioffe Physical-Technical Institute (Russian Federation)
Karina Kalinina, Ioffe Physical-Technical Institute (Russian Federation)
Nikolai Stoyanov, Ioffe Physical-Technical Institute (Russian Federation)
Yuri Yakovlev, Ioffe Physical-Technical Institute (Russian Federation)
Alice Hospodková, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Jiri Pangrác, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Jiri Oswald, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Marketa Ziková, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Edward Hulicius, Institute of Physics of the ASCR, v.v.i. (Czech Republic)

Published in SPIE Proceedings Vol. 9450:
Photonics, Devices, and Systems VI
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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