The structural and electrical evolution of graphene by oxygen plasma-induced disorder

The structural and electrical evolution of graphene by oxygen plasma-induced disorder

Evolution of a single graphene layer with disorder generated by remote oxygen plasma irradiation is investigated using atomic force microscopy, Raman spectroscopy and electrical measurement. Gradual changes of surface morphology from planar graphene to isolated granular structure associated with a d...

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Veröffentlicht in:Nanotechnology 2009-09, Vol.20 (37), p.375703-375703
Hauptverfasser: Kim, Dong Chul, Jeon, Dae-Young, Chung, Hyun-Jong, Woo, YunSung, Shin, Jai Kwang, Seo, Sunae
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Sprache:eng
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Electrochemical Techniques
Graphite - chemistry
Microscopy, Atomic Force
Nanostructures - chemistry
Nanotechnology - methods
Spectrum Analysis, Raman
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container_end_page 375703
container_issue 37
container_start_page 375703
container_title Nanotechnology
container_volume 20
creator Kim, Dong Chul
Jeon, Dae-Young
Chung, Hyun-Jong
Woo, YunSung
Shin, Jai Kwang
Seo, Sunae
description Evolution of a single graphene layer with disorder generated by remote oxygen plasma irradiation is investigated using atomic force microscopy, Raman spectroscopy and electrical measurement. Gradual changes of surface morphology from planar graphene to isolated granular structure associated with a decrease of transconductance are accounted for by two-dimensional percolative conduction by disorder and the oxygen plasma-induced doping effect. The corresponding evolution of Raman spectra of graphene shows several peculiarities such as a sudden appearance of a saturated D peak followed by a linear decrease in its intensity, a relatively inert characteristic of a D' peak and a monotonic increase of a G peak position as the exposure time to oxygen plasma increases. These are discussed in terms of a disorder-induced change of Raman spectra in the graphite system.
doi_str_mv 10.1088/0957-4484/20/37/375703
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subjects Electrochemical Techniques
Graphite - chemistry
Microscopy, Atomic Force
Nanostructures - chemistry
Nanotechnology - methods
Spectrum Analysis, Raman
title The structural and electrical evolution of graphene by oxygen plasma-induced disorder
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