Site-controlled In(Ga)As/GaAs quantum dots for integration into optically and electrically operated devices

A. Huggenberger*, C. Schneider, C. Drescher, S. Heckelmann, T. Heindel, S. Reitzenstein, M. Kamp, Sven Höfling, L. Worschech, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated the growth and device integration of site-controlled In(Ga)As quantum dots (SCQDs) on a pre-patterned substrate. A high substrate temperature of 545 degrees C during growth ensures optimal SCQD nucleation on square arrays from 200 nm up to 10 mu m period. The SCQDs exhibit a small inhomogeneous broadening of the ensemble emission and a rather narrow single SCQD linewidth. We used a scalable alignment technique to integrate the SCQDs into a p-i-n diode and observe electroluminescence of a single SCQD with a linewidth of 400 mu eV. (C) 2010 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)194-197
Number of pages4
JournalJournal of Crystal Growth
Volume323
Issue number1
DOIs
Publication statusPublished - 15 May 2011
Event16th International Conference on Molecular Beam Epitaxy (ICMBE) - Berlin, Germany
Duration: 22 Aug 201027 Aug 2010

Keywords

  • Nanostructures
  • Quantum dots
  • Site-controlled growth
  • Semiconducting III-V materials

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