Modulation of Contact Resistance between Metal and Graphene by Controlling the Graphene Edge, Contact Area, and Point Defects: An Ab Initio Study

Simple item page
dc.contributor.authorMa, Boen_US
dc.contributor.authorGong, Chengen_US
dc.contributor.authorWen, Yanweien_US
dc.contributor.authorChen, Rongen_US
dc.contributor.authorCho, Kyeongjaeen_US
dc.contributor.authorShan, Binen_US
dc.date.accessioned2014-10-07T18:59:07Z
dc.date.available2014-10-07T18:59:07Z
dc.date.created2014-05
dc.description.abstractA systematic first-principles non-equilibrium Green's function study is conducted on the contact resistance between a series of metals (Au, Ag, Pt, Cu, Ni, and Pd) and graphene in the side contact geometry. Different factors such as the termination of the graphene edge, contact area, and point defect in contacted graphene are investigated. Notable differences are observed in structural configurations and electronic transport characteristics of these metal-graphene contacts, depending on the metal species and aforementioned influencing factors. It is found that the enhanced chemical reactivity of the graphene due to dangling bonds from either the unsaturated graphene edge or point defects strengthens the metal-graphene bonding, leading to a considerable contact resistance reduction for weakly interacting metals Au and Ag. For stronger interacting metals Pt and Cu, a slightly reduced contact resistance is found due to such influencing factors. However, the wetting metals Ni and Pd most strongly hybridize with graphene, exhibiting negligible dependence on the above influencing factors. This study provides guidance for the optimization of metal-graphene contacts at an atomic scale.en_US
dc.description.sponsorshipNational Natural Science Foundation of China (Grant Nos. 11004068, 51302094, and 51101064), the National Basic Research Program of China (Grant Nos. 2011CB606401 and 2013CB934800).en_US
dc.identifier.citationMa, Bo, Cheng Gong, Yanwei Wen, Rong Chen, et al. 2014. "Modulation of contact resistance between metal and graphene by controlling the graphene edge, contact area, and point defects: An ab initio study." Journal of Applied Physics 115(18): 183708-1 to 8.en_US
dc.identifier.issn0021-8979en_US
dc.identifier.issue18en_US
dc.identifier.startpage183708-1en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4095
dc.identifier.volume115en_US
dc.publisherAmer Inst Physicsen_US
dc.relation.urihttp://dx.doi.org/10.1063/1.4876738en_US
dc.rights©2014 AIP Publishing LLC.en_US
dc.source.journalJournal of Applied Physicsen_US
dc.subjectGrapheneen_US
dc.subjectGolden_US
dc.subjectSilveren_US
dc.subjectPlatinumen_US
dc.subjectCopperen_US
dc.subjectNickelen_US
dc.subjectPalladiumen_US
dc.titleModulation of Contact Resistance between Metal and Graphene by Controlling the Graphene Edge, Contact Area, and Point Defects: An Ab Initio Studyen_US
dc.type.genrearticleen_US

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
JECS-FR-KCho-271103.92.pdf
Size:
3.76 MB
Format:
Adobe Portable Document Format
Description:
Article
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
American Institute of Physics.pdf
Size:
245.03 KB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Cho, Kyeongjae
JECS Staff and Student Research