Synthesis of edge-closed graphene ribbons with enhanced conductivity

Woo Jong Yu; Sang Hoon Chae; David Perello; Si Young Lee; Gang Hee Han; Minhee Yun; Young Hee Lee

doi:10.1021/nn101581k

Synthesis of edge-closed graphene ribbons with enhanced conductivity

Woo Jong Yu, Sang Hoon Chae, David Perello, Si Young Lee, Gang Hee Han, Minhee Yun, Young Hee Lee

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

41 Citations (Scopus)

Abstract

Edge-closed and edge-opened graphene ribbons were synthesized on Pd nanowire templates using plasma-enhanced chemical vapor deposition (PECVD). After metal nanowire etching, the tubular shaped thin graphene layers were collapsed to edge-closed graphene ribbon. In order to make edge-opened graphene ribbons, the graphene layers on the top part of the metal nanowire were selectively etched by O₂ plasma. The protected graphene layers at the bottom of nanowire are transformed to edge-opened graphene ribbon after nanowire etching. Because of defect-free edges, edge-closed graphene ribbon showed reduced D-band intensity compared to edge-opened graphene ribbons, and moreover, the conductivity of edge-closed graphene ribbon was much higher than that of edge-opened graphene ribbon.

Original language	English
Pages (from-to)	5480-5486
Number of pages	7
Journal	ACS Nano
Volume	4
Issue number	9
DOIs	https://doi.org/10.1021/nn101581k
Publication status	Published - Sept 28 2010
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science
General Engineering
General Physics and Astronomy

Keywords

grapheme
nanoribbon
nanotube
nanowire

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10.1021/nn101581k

Cite this

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title = "Synthesis of edge-closed graphene ribbons with enhanced conductivity",

abstract = "Edge-closed and edge-opened graphene ribbons were synthesized on Pd nanowire templates using plasma-enhanced chemical vapor deposition (PECVD). After metal nanowire etching, the tubular shaped thin graphene layers were collapsed to edge-closed graphene ribbon. In order to make edge-opened graphene ribbons, the graphene layers on the top part of the metal nanowire were selectively etched by O2 plasma. The protected graphene layers at the bottom of nanowire are transformed to edge-opened graphene ribbon after nanowire etching. Because of defect-free edges, edge-closed graphene ribbon showed reduced D-band intensity compared to edge-opened graphene ribbons, and moreover, the conductivity of edge-closed graphene ribbon was much higher than that of edge-opened graphene ribbon.",

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T1 - Synthesis of edge-closed graphene ribbons with enhanced conductivity

AU - Yu, Woo Jong

AU - Chae, Sang Hoon

AU - Perello, David

AU - Lee, Si Young

AU - Han, Gang Hee

AU - Yun, Minhee

AU - Lee, Young Hee

PY - 2010/9/28

Y1 - 2010/9/28

N2 - Edge-closed and edge-opened graphene ribbons were synthesized on Pd nanowire templates using plasma-enhanced chemical vapor deposition (PECVD). After metal nanowire etching, the tubular shaped thin graphene layers were collapsed to edge-closed graphene ribbon. In order to make edge-opened graphene ribbons, the graphene layers on the top part of the metal nanowire were selectively etched by O2 plasma. The protected graphene layers at the bottom of nanowire are transformed to edge-opened graphene ribbon after nanowire etching. Because of defect-free edges, edge-closed graphene ribbon showed reduced D-band intensity compared to edge-opened graphene ribbons, and moreover, the conductivity of edge-closed graphene ribbon was much higher than that of edge-opened graphene ribbon.

AB - Edge-closed and edge-opened graphene ribbons were synthesized on Pd nanowire templates using plasma-enhanced chemical vapor deposition (PECVD). After metal nanowire etching, the tubular shaped thin graphene layers were collapsed to edge-closed graphene ribbon. In order to make edge-opened graphene ribbons, the graphene layers on the top part of the metal nanowire were selectively etched by O2 plasma. The protected graphene layers at the bottom of nanowire are transformed to edge-opened graphene ribbon after nanowire etching. Because of defect-free edges, edge-closed graphene ribbon showed reduced D-band intensity compared to edge-opened graphene ribbons, and moreover, the conductivity of edge-closed graphene ribbon was much higher than that of edge-opened graphene ribbon.

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Synthesis of edge-closed graphene ribbons with enhanced conductivity

Abstract

ASJC Scopus Subject Areas

Keywords

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