Lord, AM, Maffeis, TG, Kryvchenkova, O et al. (8 more authors) (2015) Controlling the Electrical Transport Properties of Nanocontacts to Nanowires. Nano Letters, 15 (7). 4248 - 4254. ISSN 1530-6984
Abstract
The ability to control the properties of electrical contacts to nanostructures is essential to realize operational nanodevices. Here, we show that the electrical behavior of the nanocontacts between free-standing ZnO nanowires and the catalytic Au particle used for their growth can switch from Schottky to Ohmic depending on the size of the Au particles in relation to the cross-sectional width of the ZnO nanowires. We observe a distinct Schottky to Ohmic transition in transport behavior at an Au to nanowire diameter ratio of 0.6. The current-voltage electrical measurements performed with a multiprobe instrument are explained using 3-D self-consistent electrostatic and transport simulations revealing that tunneling at the contact edge is the dominant carrier transport mechanism for these nanoscale contacts. The results are applicable to other nanowire materials such as Si, GaAs, and InAs when the effects of surface charge and contact size are considered.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015, American Chemical Society AuthorChoice. 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. |
Keywords: | Electrical contacts; nanowires; edge effect; tunneling; Ohmic; Schottky |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Aug 2015 14:02 |
Last Modified: | 29 Mar 2018 03:05 |
Published Version: | http://dx.doi.org/10.1021/nl503743t |
Status: | Published |
Publisher: | American Chemical Society |
Identification Number: | 10.1021/nl503743t |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:89309 |