PLMCN 11 – Contributed Article

Cathodoluminescence spectroscopy of zinc-blende GaN quantum dots

  1. M. Bürger*,
  2. T. Schupp,
  3. K. Lischka,
  4. D. J. As

Article first published online: 28 MAR 2012

DOI: 10.1002/pssc.201100068

Issue

physica status solidi (c)

physica status solidi (c)

Special Issue: 9th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2011); see further papers in Phys. Status Solidi B 249, No. 5 (2012) • 11th International Conference on Physics of Light–Matter Coupling in Nanostructures (PLMCN11); see further papers in Phys. Status Solidi B 249, No. 5 (2012)

Volume 9, Issue 5, pages 1273–1277, May 2012

Additional Information

How to Cite

Bürger, M., Schupp, T., Lischka, K. and As, D. J. (2012), Cathodoluminescence spectroscopy of zinc-blende GaN quantum dots. Phys. Status Solidi C, 9: 1273–1277. doi: 10.1002/pssc.201100068

Author Information

  1. University of Paderborn, Department of Physics, Warburger Str. 100, 33098 Paderborn, Germany

*Phone: +49 5251 60 5848, Fax: +49 5251 60 5843

Publication History

  1. Issue published online: 3 MAY 2012
  2. Article first published online: 28 MAR 2012
  3. Manuscript Accepted: 20 FEB 2012
  4. Manuscript Received: 28 APR 2011

Funded by

  • DFG graduate program GRK 1464 “Micro- and Nanostructures in Optoelectronics and Photonics” and the University of Paderborn

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Keywords:

  • cathodoluminescence;
  • molecular beam epitaxy;
  • nitrides;
  • quantum dots;
  • droplet epitaxy

Abstract

We analyzed the cathodoluminescence of zinc-blende GaN/AlN quantum dots grown by two different methods. Method A being droplet epitaxy, a vapor liquid solid process and method B being Stranski-Krastanov growth. At an equal quantum dot density of 1011 cm-2, droplet epitaxy grown quantum dots have shown a luminescence intensity which was more than one order of magnitude higher than the one of Stranski-Krastanov quantum dots. Furthermore, we revealed a dependency between the quantum dot emission energy and the amount of deposited Ga. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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