The D and D' bands arise from defects in disordered graphitic systems.
But how are these two bands differ from each other?
What types of defects induce D' band? Is there any selection rule for D' band?
Thanks in advance!
basically, D' band is aroused from the edge reconstruction & dangling bonds of the sp2 carbon, especially at the edge cites, in case of graphitic materials. Ingeneral, it comes as a shoulder for the G-band (graphitic) at higher frequency side...D' also originate from the 2nd order resonance K and K" and dispersive in nature..
You can cite our paper..
R. K. Biroju and P. K. Giri, J. Phys. Chem. C 118, 13833 (2014).
Read this paper.. http://dx.doi.org/10.1103/PhysRevLett.97.187401
Thank you very much Dr. Sridhar Vadahanambi. Anyway this paper does not discuss anything about D' band. Probably you wanted to do Cont+C&D of another important article???
Ganesan
"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. "
It is from the abstract of the paper Dr. Vadahanambi referred.
Mahesh
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