Comparative analysis of optical properties of CVD graphene and graphite via spectroscopic ellipsometry

We report an ellipsometric study of the monolayer graphene prepared by the chemical vapor deposition (CVD). The investigation was carried over a broad spectral range spanning the ultraviolet to the near-infrared at variable incidence angles. Comparison with graphite and previously published graphene data shows a high degree of similarity in the optical properties of these two materials.