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Uniform and position-controlled InAs nanowires on 2('') Si substrates for transistor applications.

Publiceringsår: 2012
Språk: Engelska
Sidor:
Publikation/Tidskrift/Serie: Nanotechnology
Volym: 23
Nummer: 1
Dokumenttyp: Artikel
Förlag: IOP Publishing Ltd

Sammanfattning

This study presents a novel approach for indirect integration of InAs nanowires on 2('') Si substrates. We have investigated and developed epitaxial growth of InAs nanowires on 2('') Si substrates via the introduction of a thin yet high-quality InAs epitaxial layer grown by metalorganic vapor phase epitaxy. We demonstrate well-aligned nanowire growth including precise position and diameter control across the full wafer using very thin epitaxial layers (<300 nm). Statistical analysis results performed on the grown nanowires across the 2('') wafer size verifies our full control on the grown nanowire with 100% growth yield. From the crystallographic viewpoint, these InAs nanowires are predominantly of wurtzite structure. Furthermore, we show one possible device application of the aforementioned structure in vertical wrap-gated field-effect transistor geometry. The vertically aligned InAs nanowires are utilized as transistor channels and the InAs epitaxial layer is employed as the source contact. A high uniformity of the device characteristics for numerous transistors is further presented and RF characterization of these devices demonstrates an f(t) of 9.8 GHz.

Disputation

Nyckelord

  • Technology and Engineering

Övriga

Published
Yes
  • Nano
  • ISSN: 1361-6528

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