The characteristic raman spectra that I've obtained for graphene like quantum dots shows a kink at about 1450 cm-1, this is different from the reported literature. What can be the posible reason for such a feature? I haven''t been able to find any relevant information regarding this. Any suggestions/insights would be much appreciated.
Disturbed layer or impurity! entrapped molecular entity of size of water or gas while preparing your sample also be disturbing the spectral observation. However, a kink should not baffle more!!
You can compare your results with one of my paper
https://doi.org/10.1016/j.jpcs.2016.08.004
The peak position sometimes depends on the laser, what nm it has been set in the Laser Micro Raman System. Please check it before comparing with the literature.
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