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Knut Deppert

Knut Deppert

Professor

Knut Deppert

Simultaneous Growth of Pure Wurtzite and Zinc Blende Nanowires

Author

  • Sebastian Lehmann
  • Jesper Wallentin
  • Erik K. Mårtensson
  • Martin Ek
  • Knut Deppert
  • Kimberly A. Dick
  • Magnus T. Borgström

Summary, in English

The opportunity to engineer III-V nanowires in wurtzite and zinc blende crystal structure allows for exploring properties not conventionally available in the bulk form as well as opening the opportunity for use of additional degrees of freedom in device fabrication. However, the fundamental understanding of the nature of polytypism in III-V nanowire growth is still lacking key ingredients to be able to connect the results of modeling and experiments. Here we show InP nanowires of both pure wurtzite and pure zinc blende grown simultaneously on the same InP [100]-oriented substrate. We find wurtzite nanowires to grow along «111»B and zinc blende counterparts along «111»A. Further, we discuss the nucleation, growth, and polytypism of our nanowires against the background of existing theory. Our results demonstrate, first, that the crystal growth conditions for wurtzite and zinc blende nanowire growth are not mutually exclusive and, second, that the interface energies predominantly determine the crystal structure of the nanowires.

Department/s

  • Solid State Physics
  • NanoLund
  • Synchrotron Radiation Research
  • Centre for Analysis and Synthesis

Publishing year

2019

Language

English

Pages

2723-2730

Publication/Series

Nano Letters

Volume

19

Issue

4

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Nano Technology
  • Condensed Matter Physics

Keywords

  • nanowire
  • polytypism
  • Semiconductor
  • transmission electron microscopy
  • wurtzite
  • zinc blende

Status

Published

ISBN/ISSN/Other

  • ISSN: 1530-6984