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Evolution of CuI/Graphene/Ni(111) System during Vacuum Annealing

Författare

  • Alexander V. Generaloy
  • Konstantin Simonov
  • Nikolay A. Vinogradov
  • Elena M. Zagrebina
  • Nils Martensson
  • Alexei Preobrajenski
  • Alexander S. Vinogradoy

Summary, in English

We present a combined core-level spectroscopy and low-energy electron diffraction study of the evolution of thin CuI layers on graphene/Ni(111) during annealing. It has been found that the annealing of the CuI/graphene/Ni(111) system up to 160 degrees C results in the formation of an ordered CuI overlayer with a (root 3 x root 3) R30 degrees structure on top of the graphene surface. At annealing temperatures of about 180 degrees C or higher, the CuI overlayer decomposes with a simultaneous intercalation of Cu and I atoms underneath the graphene monolayer on Ni(111). Nearly complete intercalation of graphene by Cu and I atoms can be achieved by deposition of about 20 angstrom of CuI, followed by annealing at 200 degrees C. The intercalated graphene layer is p-doped due to interfacial iodine atoms.

Publiceringsår

2015

Språk

Engelska

Sidor

12434-12444

Publikation/Tidskrift/Serie

Journal of Physical Chemistry C

Volym

119

Issue

22

Dokumenttyp

Artikel i tidskrift

Förlag

The American Chemical Society (ACS)

Ämne

  • Physical Chemistry

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1932-7447