Ultra-Clean Freestanding Graphene by Platinum-Metal Catalysis

Jean-Nicolas Longchamp; Conrad Escher; Hans-Werner Fink

doi:10.1116/1.4793746

Ultra-Clean Freestanding Graphene by Platinum-Metal Catalysis

Materials Science 2015-06-11 v1 Mesoscale and Nanoscale Physics

Authors: Jean-Nicolas Longchamp , Conrad Escher , Hans-Werner Fink

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Abstract

While freestanding clean graphene is essential for various applications, existing technologies for removing the polymer layer after transfer of graphene to the desired substrate still leave significant contaminations behind. We discovered a method for preparing ultra-clean freestanding graphene utilizing the catalytic properties of platinum metals. Complete catalytic removal of polymer residues requires annealing in air at a temperature between 175 and 350{\deg}C. Low-energy electron holography investigations prove that this method results in ultra-clean freestanding graphene.

Keywords

freestanding graphene platinum-metal catalysis polymer removal annealing low-energy electron holography graphene transfer contamination

Cite

@article{arxiv.1210.6824,
  title  = {Ultra-Clean Freestanding Graphene by Platinum-Metal Catalysis},
  author = {Jean-Nicolas Longchamp and Conrad Escher and Hans-Werner Fink},
  journal= {arXiv preprint arXiv:1210.6824},
  year   = {2015}
}

Ultra-Clean Freestanding Graphene by Platinum-Metal Catalysis

Abstract

Keywords

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