Interference effect on Raman spectrum of graphene on SiO 2 / Si

  title={Interference effect on Raman spectrum of graphene on SiO 2 / Si},
  author={Duhee Yoon and Hyerim Moon and Young-Woo Son and Jin Sik Choi and Bae Ho Park and Young Hun Cha and Young Dong Kim and Hyeonsik Cheong},
The intensity ratio between two major Raman bands in graphene is one of the most important information for physics of graphene and has been believed to represent various intrinsic properties of graphene without critical assessment of extrinsic effects. We report a micro Raman spectroscopy study on the Raman intensity ratio of the 2D band to the G Raman band of graphene varying the thickness of dielectric layers (SiO2) underneath it. The ratio is shown to change by almost 370% when the thickness… CONTINUE READING
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