Raman Spectrum of Graphene and Graphene Layers

Abstract

Graphene is the two-dimensional building block for carbon allotropes of every other dimensionality. We show that its electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers. The D peak second order changes in shape, width, and position for an increasing number of layers, reflecting the change in the electron bands via a double resonant Raman process. The G peak slightly down-shifts. This allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.

Keywords

Affiliated Institutions

• Centre National de la Recherche Scientifique FR
• Institut de minéralogie, de physique des matériaux et de cosmochimie FR
• Max Planck Society DE
• University of Manchester GB
• University of Cambridge GB
• Sorbonne Université FR

Related Publications