Exploration of Graphene Layers in Various Carbon Materials by Raman Spectroscopic Techniques

Structural figure prints for identifying the molecules in graphene layers of various carbon materials can be obtained from Raman spectroscopy. In this review we have discussed the Microraman analysis of few- layer graphenes from different carbon samples originating from hydrocarbon and agricultural derivatives. This review also shows the crystallite size dependence of the D-band in the Raman spectrum. Deconvolution of broad signal peaks is done to get multiple overlapping bands giving information about various aspects of defects and structure of graphitic materials. This review also contains information regarding different types of defects that can be analyzed using Raman spectroscopy.