This paper investigates the FeCl₃- based few- layer graphene intercalation compound flakes based on the Raman spectroscopy. Different intercalated parts of the graphene flake and the corresponding doping level can be retrieved by the G band Raman mapping. The G band Raman spectrum consists of a single peak or double peaks for the bilayer and tetralayer graphenes, respectively. A surprising intrinsic G₀ peak appears at the edges of the intercalated graphene, which suggests that the doped graphene is partially undoped at the edges. Furthermore for the bilayer graphene intercalation compound flake, the 2D band peak can fit with four Lorenztian peaks with different full width half maxima (FWHM). This study provides a better understanding of the property of the electrically modified graphene.

graphene  /  Raman spectroscopy  /  few-layer graphene intercalation compounds  /  FeCl₃-based