Raman imaging on high-quality graphene grown by hot-filament chemical vapor deposition

Kataria, S and Patsha, Avinash and Dhara, S and Tyagi, AK and Barshilia, Harish C (2012) Raman imaging on high-quality graphene grown by hot-filament chemical vapor deposition. Journal of Raman Spectroscopy, 43 . pp. 1864-1867. ISSN 1097-4555

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    Abstract

    We report the synthesis of high-quality graphene on Cu foils using hot-filament chemical vapor deposition technique and demonstrate that by suitably varying the CH4 and H2 flow rates, one can also obtain hydrogenated graphene. Micro-Raman spectroscopy studies confirm the growth of monolayer graphene as inferred from the intensity ratio of 2D to G peak which is nearly four in unhydrogenated samples. Detailed Raman area mapping confirms the uniform coverage of monolayer graphene. The grown layer is also transferred onto a Si substrate over ~10�10mm sq. area. The present results provide a leap in synthesis technology of high-quality graphene and pave way for scaling up the process.

    Item Type: Journal Article
    Additional Information: Copyright to this article belongs to M/s. John Wiley & Sons
    Uncontrolled Keywords: Hot-filament CVD;Graphene;Hydrogenation;Raman spectroscopy
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    PHYSICS > Physics(General)
    Division/Department: Surface Engineering Division, Other, Other, Other, Surface Engineering Division
    Depositing User: Ms. Alphones Mary
    Date Deposited: 21 Mar 2013 13:20
    Last Modified: 21 Mar 2013 13:20
    URI: http://nal-ir.nal.res.in/id/eprint/11509

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