Variable-Angle Spectroscopic Ellipsometry of Graphene-Based Films

We present a review of the authors’ research works on Variable-Angle Spectroscopy of graphene-based films

Grazia Giuseppina Politano; Carlo Versace

2021

Scholarcy highlights

  • A transparent conductor is a relevant constituent in several photoelectronic appliances
  • We present a review of the authors’ research works on Variable-Angle Spectroscopy of graphene-based films
  • We report about VASE optical model of less studied graphene-based materials such as graphene nanoplatelets and reduced graphene oxide stabilized with Poly(Sodium 4-Styrenesulfonate) films; particular attention to chemical vapor deposition-grown graphene on flexible substrates is given
  • In Section 3.2: “Optical properties of graphene-based thin films” the optical properties of GO, thermally reduced graphene oxide, RGO stabilized with PSS and GNPs films were summarized
  • The GO platelets are negatively charged because of the plentiful deprotonated carboxylate groups, they are electrophoretically drawn to the positive electrode and make a film when a direct current voltage is applied
  • The optical study of the GO films electrophoretically deposited on Ti was carried out using VASE, before and after the annealing, and reported in previous research
  • It would be interesting studying functional hybrid material composed of chemical vapor deposition-grown graphene on polyethylene terephthalate substrates and magnetron-sputtered Au and/or Ag for flexible high-performance graphene photodetectors

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