Raman Radial Mode Revealed from Curved Graphene

Jae Kap Lee, K. P.S.S. Hembram, Yeseul Park, Sang Gil Lee, Jin Gyu Kim, Wooyoung Lee, Dong Ju Moon

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Abstract

One of the unsolved fundamental issues of graphene is establishing an appropriate way to discern layers of graphene structures. We report a simple methodology to analyze graphene structures using Raman signals in the range of ∼100 to ∼500 cm-1 comprising clear 118 or 175 cm-1 peaks. We demonstrate that the low-energy signals on Raman spectra of plasma-seeded grown graphene sheets originated from nanocurvature (c) of mono- (175 and 325-500 cm-1 signals) (c - 1 nm) and bilayer (118 cm-1 peak) (c -2 nm) graphene with Raman simulations, based on Raman radial mode (RM) Eigen vectors. Our RM model provides a standard way of identifying and evaluating graphene structures.

Original languageEnglish
Pages (from-to)2597-2601
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume8
Issue number12
DOIs
Publication statusPublished - 2017 Jun 15

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Lee, J. K., Hembram, K. P. S. S., Park, Y., Lee, S. G., Kim, J. G., Lee, W., & Moon, D. J. (2017). Raman Radial Mode Revealed from Curved Graphene. Journal of Physical Chemistry Letters, 8(12), 2597-2601. https://doi.org/10.1021/acs.jpclett.7b01220