Nano Research

, Volume 3, Issue 7, pp 528–536

Direct comparison of catalyst-free and catalyst-induced GaN nanowires

  • Caroline Chèze
  • Lutz Geelhaar
  • Oliver Brandt
  • Walter M. Weber
  • Henning Riechert
  • Steffen Münch
  • Ralph Rothemund
  • Stephan Reitzenstein
  • Alfred Forchel
  • Thomas Kehagias
  • Philomela Komninou
  • George P. Dimitrakopulos
  • Theodoros Karakostas
Open AccessResearch Article

DOI: 10.1007/s12274-010-0013-9

Cite this article as:
Chèze, C., Geelhaar, L., Brandt, O. et al. Nano Res. (2010) 3: 528. doi:10.1007/s12274-010-0013-9

Abstract

GaN nanowires have been grown by molecular beam epitaxy either catalyst-free or catalyst-induced by means of Ni seeds. Under identical growth conditions of temperature and V/III ratio, both types of GaN nanowires are of wurtzite structure elongated in the Ga-polar direction and are constricted by M-plane facets. However, the catalyst-induced nanowires contain many more basal-plane stacking faults and their photoluminescence is weaker. These differences can be explained as effects of the catalyst Ni seeds.
https://static-content.springer.com/image/art%3A10.1007%2Fs12274-010-0013-9/MediaObjects/12274_2010_13_Fig1_HTML.jpg

Keywords

Nanowirenanocolumnmolecular beam epitaxy (MBE)photoluminescencestacking faultscatalyst
Download to read the full article text

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Caroline Chèze
    • 1
    • 5
  • Lutz Geelhaar
    • 1
    • 5
  • Oliver Brandt
    • 1
  • Walter M. Weber
    • 2
    • 5
  • Henning Riechert
    • 1
    • 4
  • Steffen Münch
    • 3
  • Ralph Rothemund
    • 3
  • Stephan Reitzenstein
    • 3
  • Alfred Forchel
    • 3
  • Thomas Kehagias
    • 4
  • Philomela Komninou
    • 4
  • George P. Dimitrakopulos
    • 4
  • Theodoros Karakostas
    • 4
  1. 1.Paul-Drude-Institut für FestkörperelektronikBerlinGermany
  2. 2.NaMLab gGmbHDresdenGermany
  3. 3.Technische PhysikUniversität WürzburgWürzburgGermany
  4. 4.Physics DepartmentAristotle UniversityThessalonikiGreece
  5. 5.QimondaMunichGermany