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Nano Research

, Volume 8, Issue 8, pp 2620–2635 | Cite as

Effect of oxygen and nitrogen functionalization on the physical and electronic structure of graphene

  • Alexander J. Marsden
  • Peter Brommer
  • James J. Mudd
  • M. Adam Dyson
  • Robert Cook
  • María Asensio
  • Jose Avila
  • Ana Levy
  • Jeremy Sloan
  • David Quigley
  • Gavin R. Bell
  • Neil R. Wilson
Open Access
Research Article

Abstract

Covalent functionalization of graphene offers opportunities for tailoring its properties and is an unavoidable consequence of some graphene synthesis techniques. However, the changes induced by the functionalization are not well understood. By using atomic sources to control the extent of the oxygen and nitrogen functionalization, we studied the evolution in the structure and properties at the atomic scale. Atomic oxygen reversibly introduces epoxide groups whilst, under similar conditions, atomic nitrogen irreversibly creates diverse functionalities including substitutional, pyridinic, and pyrrolic nitrogen. Atomic oxygen leaves the Fermi energy at the Dirac point (i.e., undoped), whilst atomic nitrogen results in a net n-doping; however, the experimental results are consistent with the dominant electronic effect for both being a transition from delocalized to localized states, and hence the loss of the signature electronic structure of graphene.

Keywords

graphene functionalization chemical vapor deposition density functional theory 

Supplementary material

12274_2015_768_MOESM1_ESM.pdf (4.5 mb)
Supplementary material, approximately 4.45 MB.

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Copyright information

© Neil R. Wilson 2015

Authors and Affiliations

  • Alexander J. Marsden
    • 1
  • Peter Brommer
    • 1
    • 2
  • James J. Mudd
    • 1
  • M. Adam Dyson
    • 1
  • Robert Cook
    • 1
  • María Asensio
    • 3
  • Jose Avila
    • 3
  • Ana Levy
    • 3
  • Jeremy Sloan
    • 1
  • David Quigley
    • 1
    • 2
  • Gavin R. Bell
    • 1
  • Neil R. Wilson
    • 1
  1. 1.Department of PhysicsUniversity of WarwickCoventryUK
  2. 2.Centre for Scientific ComputingUniversity of WarwickCoventryUK
  3. 3.Synchrotron SOLEIL, L’Orme des MerisiersGif sur Yvette CedexFrance

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