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Electric Property Evolution of Structurally Defected Multilayer Graphene

Authors
Kim, KanghyunPark, Hyung JuWoo, Byung-ChillKim, Kook JinKim, Gyu TaeYun, Wan Soo
Issue Date
10월-2008
Publisher
AMER CHEMICAL SOC
Keywords
graphene; disorder; noise
Citation
NANO LETTERS, v.8, no.10, pp.3092 - 3096
Indexed
SCIE
SCOPUS
Journal Title
NANO LETTERS
Volume
8
Number
10
Start Page
3092
End Page
3096
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/122589
DOI
10.1021/nl8010337
ISSN
1530-6984
Abstract
We report on the influence of structural disorder on the electrical properties of multilayer graphene (MLG). Exponential decreases in the conductance and transconductance with increase of defects in the MLG were observed, which could be explained by the percolation and the variable range hopping conduction. An enhancement of p-type nature with increasing disorders was considered to be the result of oxygen doping in the graphene sheets introduced by oxygen plasma. The rapid increase of low-frequency noise was attributed to the formation of conductive network through the continuum percolation, as the low-frequency noise could be increased by the enhanced carrier scattering at the defect sites. We hope that our result should suggest a simple method of tuning the electrical properties of graphene.
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공과대학 (전기전자공학부)
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