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

S. Kataria*, Avinash Patsha, S. Dhara, A. K. Tyagi, Harish C. Barshilia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)1864-1867
Number of pages4
JournalJournal of Raman Spectroscopy
Issue number12
StatePublished - Dec 2012
Externally publishedYes


  • Raman spectroscopy
  • graphene
  • hot-filament CVD
  • hydrogenation


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