Electroluminescence from individual InAs self-assembled quantum dots

Itskevich, I. E.; Rybchenko, S. I.; Itskevich, Igor; Stoddart, S.T.; Rybchenko, S.I.; Tartakovskii, I.I.; Eaves, L.; Parnell, S.; Main, P.C.; Henini, M.

Abstract

Emission lines from individual InAs self-assembled quantum dots (SAQD) have been observed in electroluminescence spectra from small-area p-i-n light-emitting-diode heterostructure devices containing an embedded layer of SAQD. In the energy range which corresponds to the blue edge of the luminescence from the dot ensemble, the lines emerge from a zero background with increasing positive bias, a signature that each line is due to exciton recombination from an individual dot. In magnetic field parallel to the growth direction, each line splits into two Zeeman components which exhibit pronounced circular polarizations. The measured value of the g-factor and the observed diamagnetic shift are in good agreement with earlier data obtained from photoluminescence spectroscopy.

Citation

Itskevich, I., Stoddart, S., Rybchenko, S., Tartakovskii, I., Eaves, L., Parnell, S., …Henini, M. (2000). Electroluminescence from individual InAs self-assembled quantum dots. Physica status solidi. A, Applied research, 178(1), 307-311. https://doi.org/10.1002/1521-396X%28200003%29178%3A1%3C307%3A%3AAID-PSSA307%3E3.0.CO%3B2-Y

• Journal Article Type: Article
• Acceptance Date: Mar 31, 2000
• Online Publication Date: Jun 14, 2000
• Publication Date: Mar 1, 2000
• Journal: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
• Print ISSN: 0031-8965
• Electronic ISSN: 1521-396X
• Peer Reviewed: Peer Reviewed
• Volume: 178
• Issue: 1
• Pages: 307-311
• DOI: https://doi.org/10.1002/1521-396X%28200003%29178%3A1%3C307%3A%3AAID-PSSA307%3E3.0.CO%3B2-Y
• Keywords: Electronic, Optical and Magnetic Materials; Condensed Matter Physics
• Public URL: https://hull-repository.worktribe.com/output/391455