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나노 구조 물리 연구단
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Nondestructive Characterization of Graphene Defects

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Title
Nondestructive Characterization of Graphene Defects
Author(s)
Thuc Hue Ly; Dinh Loc Duong; Quang Huy Ta; Fei Yao; Quoc An Vu; Hye Yun Jeong; Sang Hoon Chae; Young Hee Lee
Publication Date
2013-11
Journal
ADVANCED FUNCTIONAL MATERIALS, v.23, no.41, pp.5183 - 5189
Publisher
WILEY-V C H VERLAG GMBH
Abstract
An effective method is reported for oxidizing graphene/copper fi lm in which air oxidation of the underlying copper fi lm occurs through the grain boundary lines of graphene without oxidizing graphene. This oxidation is realized by partially immersing the graphene/copper fi lm in sodium chloride solution. Electrons generated during etching of the graphene/copper fi lm in electrolyte diffuse into the fi lm in contact with air, which eventually enhances air oxidation of copper through the graphene layer. While the graphene layer acts as a protective layer against oxidation of the copper fi lm, oxidation of the underlying Cu fi lm near graphene grain boundary lines is observed by optical microscopy. This observation could be attributed to the selective diffusion of oxygen radicals through isolated defects and graphene grain boundaries. The process involves no appreciable oxidation of the graphene layer including the graphene grain boundary, as confi rmed by use of detailed Raman and X-ray photoelectron spectroscopy. DOI: 10.1002/adfm.201300493 T.
URI
https://pr.ibs.re.kr/handle/8788114/1219
ISSN
1616-301X
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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