Effects of contact oxidization on the transport properties of Au/ZGNR junctions

The transport properties of the junction assembled by zigzag graphene nanoribbons (ZGNRs) and Au electrode (Au/ZGNR) are investigated using first‐principles calculations. It is found that the Au/ZGNR junction behaves as a typical diode with Schottky barrier at the contact. Our results indicate that...

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Bibliographic Details
Published in:Physica status solidi. PSS-RRL. Rapid research letters 2012-12, Vol.6 (12), p.457-459
Main Authors: Zhang, C. X., Xiao, Huaping, He, Chaoyu, Xue, L., Zhang, K. W., Sun, L. Z., Zhong, Jianxin
Format: Article
Language:English
Subjects:
contact oxidization
Electrodes
electronic transport
gold electrodes
graphene nanoribbons
Oxidation
Solid state physics
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Summary:The transport properties of the junction assembled by zigzag graphene nanoribbons (ZGNRs) and Au electrode (Au/ZGNR) are investigated using first‐principles calculations. It is found that the Au/ZGNR junction behaves as a typical diode with Schottky barrier at the contact. Our results indicate that although the oxidization at the contact slightly influences the Schottky barrier, the I –V characteristic is effectively modulated. Such effect derives from the impact of the oxidization on the coupling between the ZGNRs and Au electrode. Au/ZGNR junction oxidized by C=O groups at the contact and relative I –V curves. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) Oxidization is introduced at the contact of a zigzag graphene nanoribbon (ZGNR) and metal (Au electrode) junction. Its effects on the electronic transport properties are investigated. Oxidization at the contact has little influence on the Schottky barrier, but effectively modulates the current under applied bias.
ISSN:1862-6254
1862-6270
DOI:10.1002/pssr.201206409