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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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/jrs.411...

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 × 10 mm 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: Article
Subjects: GENERAL > General
Depositing User: Dr. Harish C. Barshilia
Date Deposited: 28 Feb 2013 05:29
Last Modified: 28 Feb 2013 05:29
URI: http://nal-ir.nal.res.in/id/eprint/11480

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