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Effects of contact oxidization on the transport properties of Au/ZGNR junctions
Author(s) -
Zhang C. X.,
Xiao Huaping,
He Chaoyu,
Xue L.,
Zhang K. W.,
Sun L. Z.,
Zhong Jianxin
Publication year - 2012
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201206409
Subject(s) - materials science , schottky barrier , zigzag , electrode , schottky diode , graphene , graphene nanoribbons , optoelectronics , diode , condensed matter physics , nanotechnology , chemistry , geometry , mathematics , physics
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)