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Knut Deppert

Knut Deppert

Professor

Knut Deppert

Structural properties of (111)B-oriented III-V nanowires

Author

  • Jonas Johansson
  • Lisa Karlsson
  • CPT Svensson
  • Thomas Mårtensson
  • Brent Wacaser
  • Knut Deppert
  • Lars Samuelson
  • Werner Seifert

Summary, in English

Controlled growth of nanowires is an important, emerging research field with many applications in, for example, electronics, photonics, and life sciences. Nanowires of zinc blende crystal structure, grown in the left fence111right fenceB direction, which is the favoured direction of growth, usually have a large number of twin-plane defects. Such defects limit the performance of optoelectronic nanowire-based devices. To investigate this defect formation, we examine GaP nanowires grown by metal-organic vapour-phase epitaxy. We show that the nanowire segments between the twin planes are of octahedral shape and are terminated by {111} facets, resulting in a microfaceting of the nanowires. We discuss these findings in a nucleation context, where we present an idea on how the twin planes form. This investigation contributes to the understanding of defect formation in nanowires. One future prospect of such knowledge is to determine strategies on how to control the crystallinity of nanowires.

Department/s

  • Solid State Physics
  • Centre for Analysis and Synthesis
  • Nanometer structure consortium (nmC)-lup-obsolete

Publishing year

2006

Language

English

Pages

574-580

Publication/Series

Nature Materials

Volume

5

Issue

7

Document type

Journal article

Publisher

Nature Publishing Group

Topic

  • Condensed Matter Physics

Status

Published

Research group

  • Nanometer structure consortium (nmC)-lup-obsolete

ISBN/ISSN/Other

  • ISSN: 1476-4660