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Determination of diffusion lengths in nanowires using cathodoluminescence

Publiceringsår: 2010
Språk: Engelska
Sidor:
Publikation/Tidskrift/Serie: Applied Physics Letters
Volym: 97
Nummer: 7
Dokumenttyp: Artikel
Förlag: American Institute of Physics

Sammanfattning

We used cathodoluminescence imaging to determine diffusion lengths in III-V semiconductor nanowires, grown by metal-organic chemical vapor deposition seeded by gold nanoparticles. Intensity profiles were recorded either from the interface between the substrate and homogeneous nanowires, or from segments in nanowires containing axial heterostructures to determine the diffusion length. We determined diffusion lengths of 0.10 to 0.90 mu m, the shortest for uncapped wires. The reduction is attributed largely to surface recombination. (C) 2010 American Institute of Physics. doi:10.1063/1.3473829

Disputation

Nyckelord

  • Physics and Astronomy
  • quantum wires
  • semiconductor
  • semiconductor heterojunctions
  • semiconductor growth
  • nanowires
  • nanoparticles
  • MOCVD
  • III-V semiconductors
  • gold
  • gallium arsenide
  • diffusion
  • aluminium compounds
  • cathodoluminescence
  • surface recombination

Övrigt

Published
Yes
  • ISSN: 0003-6951

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