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Room temperature graphene growth on complex metal matrix by PLD

Abd Elhamid, A.M. ; Aboulfotouh, A.M. ; Hafez, M.A. ; Azzouz, I.M.

Diamond and related materials, 2017-11, Vol.80, p.162-167 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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  • Título:
    Room temperature graphene growth on complex metal matrix by PLD
  • Autor: Abd Elhamid, A.M. ; Aboulfotouh, A.M. ; Hafez, M.A. ; Azzouz, I.M.
  • Assuntos: Carbon ; Catalysis ; Coordination compounds ; Copper ; Diffraction ; Foils ; Graphene ; Laser pulse power ; Metal foils ; Metal matrix composites ; Ni-Cu system ; Nickel ; PLD ; Pyrolytic graphite ; Raman spectra ; Room temperature ; Studies ; Substrates
  • É parte de: Diamond and related materials, 2017-11, Vol.80, p.162-167
  • Descrição: PLD was applied to grow few-layers graphene from highly oriented pyrolytic graphite target on complex Ni-Cu substrates at room temperature, for the first time. The substrates were prepared by PLD of Ni on Cu foil at two different temperatures followed by similar heat treatments. The yielded Ni-Cu substrates showed two different types of structures confirmed by XRD. Unexpected extreme difference in the substrates' catalytic effect on graphene growth was proven via Raman spectra to ultimately yield either a few layers graphene or barely amorphous carbon. The effect of laser pulse energies on graphene growth has been studied as well. The results corroborate a novel class of highly efficient bi-metallic catalyst and the first well defined graphene at room temperature by any deposition technique. [Display omitted] •PLD of graphitic target could grow graphene at room temperature.•NiCu alloy and composite substrates catalytic effect comparison on graphene growth is presented.•Unique structure of the composite substrates that force 2D layers formation.•Room temperature diffusion through grain boundaries is expected within composite substrate.
  • Editor: Amsterdam: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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