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    Thinning and functionalization of few-layer graphene sheets by CF4 plasma treatment

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    Thinning and functionalization of few-layer graphene sheets by CF4 plasma treatment.pdf
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    Type
    Article
    Authors
    Shen, Chao cc
    Cao, Ronggen
    Cheng, Yingchun cc
    Ding, Fei
    Huang, Gaoshan
    Mei, Yongfeng
    Schwingenschlögl, Udo cc
    KAUST Department
    Computational Physics and Materials Science (CPMS)
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2012-06-01
    Online Publication Date
    2012-06-01
    Print Publication Date
    2012
    Permanent link to this record
    http://hdl.handle.net/10754/315760
    
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    Abstract
    Structural changes of few-layer graphene sheets induced by CF4 plasma treatment are studied by optical microscopy and Raman spectroscopy, together with theoretical simulation. Experimental results suggest a thickness reduction of few-layer graphene sheets subjected to prolonged CF4 plasma treatment while plasma treatment with short time only leads to fluorine functionalization on the surface layer by formation of covalent bonds. Raman spectra reveal an increase in disorder by physical disruption of the graphene lattice as well as functionalization during the plasma treatment. The F/CF3 adsorption and the lattice distortion produced are proved by theoretical simulation using density functional theory, which also predicts p-type doping and Dirac cone splitting in CF4 plasma-treated graphene sheets that may have potential in future graphene-based micro/nanodevices.
    Citation
    Shen C, Huang G, Cheng Y, Cao R, Ding F, et al. (2012) Thinning and functionalization of few-layer graphene sheets by CF4 plasma treatment. Nanoscale Research Letters 7: 268. doi:10.1186/1556-276X-7-268.
    Publisher
    Springer Nature
    Journal
    Nanoscale Research Letters
    DOI
    10.1186/1556-276X-7-268
    PubMed ID
    22625875
    PubMed Central ID
    PMC3458992
    Additional Links
    http://www.nanoscalereslett.com/content/7/1/268
    ae974a485f413a2113503eed53cd6c53
    10.1186/1556-276X-7-268
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; Computational Physics and Materials Science (CPMS)

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