Probing Bilayer Grain Boundaries in Large-Area Graphene with Tip-Enhanced Raman Spectroscopy.

Park, Kyoung-Duck; Raschke, Markus B; Atkin, Joanna M; Lee, Young Hee; Jeong, Mun Seok · Adv Mater · 2017

basic_science · Level V

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Abstract

The bilayer grain boundaries (GBs) in chemical-vapor-deposition-grown large-area graphene are identified using multispectral tip-enhanced Raman imaging with 18 nm spatial resolution. The misorientation angle of the bilayer GBs is determined from a quantitative analysis of the phonon-scattering properties associated with the modified electronic structure.