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DC Field | Value | Language |
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dc.citation.endPage | 2073 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 2067 | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 30 | - |
dc.contributor.author | Qi, Zhikai | - |
dc.contributor.author | Zhu, Xudong | - |
dc.contributor.author | Jin, Hongchang | - |
dc.contributor.author | Zhang, Tiezhu | - |
dc.contributor.author | Kong, Xianghua | - |
dc.contributor.author | Ruoff, Rodney S. | - |
dc.contributor.author | Qiao, Zhenhua | - |
dc.contributor.author | Ji, Hengxing | - |
dc.date.accessioned | 2023-12-21T21:07:05Z | - |
dc.date.available | 2023-12-21T21:07:05Z | - |
dc.date.created | 2018-05-09 | - |
dc.date.issued | 2018-03 | - |
dc.description.abstract | Chemical vapor deposition (CVD) on Cu foils emerged as an important method for preparing high-quality and large-area graphene films for practical applications. However, to date it remains challenging to rapidly identify the structural features, especially the layer numbers, of CVD-graphene directly on Cu substrate. Herein, we report an O-2-plasma-assisted approach for identifying the coverage, wrinkles, domain size, and layer number of large-area graphene films on Cu foils by optical microscopy. The wrinkles and grain boundaries of five-layer graphene can be observed with a grayscale increment of similar to 23.4% per one graphene layer after O-2-plasma treatment for only 15 s, which allows for checking graphene on Cu foils with a sample size of 17 cm x 20 cm in a few minutes. The Raman spectroscopy and X-ray photoelectron spectroscopy presents a strong layer number dependence of both the plasma induced graphene defects and Cu oxides, which, as indicated by molecular dynamic simulation, is responsible for the improved image contrast as a result of the interaction between O-ions and graphene with different layer numbers. We expect that this O-2-plasma-assisted method would be applied to meter-scale samples if atmospheric-pressure plasma is used and therefore will be beneficial for the fast evaluation of CVD-graphene in both laboratory and industry. | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.30, no.6, pp.2067 - 2073 | - |
dc.identifier.doi | 10.1021/acs.chemmater.7b05377 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.scopusid | 2-s2.0-85044631563 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/24085 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acs.chemmater.7b05377 | - |
dc.identifier.wosid | 000428712200029 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Rapid Identification of the Layer Number of Large-Area Graphene on Copper | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | CHEMICAL-VAPOR-DEPOSITION | - |
dc.subject.keywordPlus | SINGLE-CRYSTAL GRAPHENE | - |
dc.subject.keywordPlus | BILAYER GRAPHENE | - |
dc.subject.keywordPlus | OXIDE-FILMS | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | DYNAMICS | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | GLASS | - |
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