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Self-seeded, position-controlled InAs nanowire growth on Si: A growth parameter study

Författare:
Publiceringsår: 2011
Språk: Engelska
Sidor: 51-56
Publikation/Tidskrift/Serie: Journal of Crystal Growth
Volym: 334
Nummer: 1
Dokumenttyp: Artikel
Förlag: Elsevier

Sammanfattning

In this work, the nucleation and growth of InAs nanowires on patterned SiO2/Si(111) substrates is studied. It is found that the nanowire yield is strongly dependent on the size of the etched holes in the SiO2, where openings smaller than 180 nm lead to a substantial decrease in nucleation yield, while openings larger than View the MathML source promote nucleation of crystallites rather than nanowires. We propose that this is a result of indium particle formation prior to nanowire growth, where the size of the indium particles, under constant growth parameters, is strongly influenced by the size of the openings in the SiO2 film. Nanowires overgrowing the etched holes, eventually leading to a merging of neighboring nanowires, shed light into the growth mechanism.

Disputation

Nyckelord

  • Technology and Engineering
  • Nanostructures
  • Nanowire growth
  • Metalorganic vapor phase epitaxy
  • Semiconductor III–V materials

Övriga

Published
Yes
  • Nanometer structure consortium (nmC)
  • Digital ASIC
  • Nano
  • ISSN: 0022-0248

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