Electric property evolution of structurally defected multilayer grapheme

Kim Kanghyun; Ju Park Hyung; Byung Chill Woo; Jin Kim Kook; Tae Kim Gyu; Soo Yun Wan

doi:10.1021/nl8010337

Electric property evolution of structurally defected multilayer grapheme

Kim Kanghyun, Ju Park Hyung, Byung Chill Woo, Jin Kim Kook, Tae Kim Gyu, Soo Yun Wan

Research output: Contribution to journal › Article › peer-review

176 Citations (Scopus)

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.

Original language	English
Pages (from-to)	3092-3096
Number of pages	5
Journal	Nano Letters
Volume	8
Issue number	10
DOIs	https://doi.org/10.1021/nl8010337
Publication status	Published - 2008 Oct

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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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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AU - Kanghyun, Kim

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AU - Gyu, Tae Kim

AU - Wan, Soo Yun

PY - 2008/10

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Electric property evolution of structurally defected multilayer grapheme

Abstract

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