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Controlling the Electrical Transport Properties of Nanocontacts to Nanowires

Alex Lord Orcid Logo, Thierry Maffeis Orcid Logo, Olga Kryvchenkova, Richard Cobley Orcid Logo, Karol Kalna Orcid Logo, Despoina M. Kepaptsoglou, Quentin M. Ramasse, Alex S. Walton, Michael B. Ward, Jürgen Köble, Steve Wilks

Nano Letters, Volume: 15, Issue: 7, Pages: 4248 - 4254

Swansea University Authors: Alex Lord Orcid Logo, Thierry Maffeis Orcid Logo, Richard Cobley Orcid Logo, Karol Kalna Orcid Logo, Steve Wilks

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DOI (Published version): 10.1021/nl503743t

Abstract

The work shows that electrical behaviour of nanocontacts between free-standing ZnO nanowires and catalytic Au particle used for their growth can switch from Schottky to Ohmic depending on the size of the Au particles in relation to a cross-sectional width of the nanowires. This change in transport b...

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Published in: Nano Letters
ISSN: 1530-6984 1530-6992
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa22729
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Abstract: The work shows that electrical behaviour of nanocontacts between free-standing ZnO nanowires and catalytic Au particle used for their growth can switch from Schottky to Ohmic depending on the size of the Au particles in relation to a cross-sectional width of the nanowires. This change in transport behaviour occurs at a nanowire diameter ratio of 0.6. The current–voltage electrical measurements with multiprobe instrument are explained using 3-D self-consistent transport simulations revealing that tunnelling at the contact edge is dominant carrier transport mechanism. The work resulted in 2 more papers in Nanoletters, and ACS Appl. Mater. & Interfaces.
Item Description: This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/nl503743t.
Keywords: Electrical contacts, nanowires, edge effect, tunneling, Ohmic, Schottky
College: College of Engineering
Issue: 7
Start Page: 4248
End Page: 4254