Highly p -doped epitaxial graphene obtained by fluorine intercalation

  • Andrew L. Walter
  • , Ki Joon Jeon
  • , Aaron Bostwick
  • , Florian Speck
  • , Markus Ostler
  • , Thomas Seyller
  • , Luca Moreschini
  • , Yong Su Kim
  • , Young Jun Chang
  • , Karsten Horn
  • , Eli Rotenberg

Research output: Contribution to journalArticlepeer-review

144 Scopus citations

Abstract

We present a method for decoupling epitaxial graphene grown on SiC(0001) by intercalation of a layer of fluorine at the interface. The fluorine atoms do not enter into a covalent bond with graphene but rather saturate the substrate Si bonds. This configuration of the fluorine atoms induces a remarkably large hole density of p≈4.5× 1013 cm-2, equivalent to the location of the Fermi level at 0.79 eV above the Dirac point ED.

Original languageEnglish
Article number184102
JournalApplied Physics Letters
Volume98
Issue number18
DOIs
StatePublished - 2 May 2011

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