Nature Communications (Oct 2019)

Direct imaging of light-element impurities in graphene reveals triple-coordinated oxygen

  • Christoph Hofer,
  • Viera Skákalová,
  • Tobias Görlich,
  • Mukesh Tripathi,
  • Andreas Mittelberger,
  • Clemens Mangler,
  • Mohammad Reza Ahmadpour Monazam,
  • Toma Susi,
  • Jani Kotakoski,
  • Jannik C. Meyer

DOI
https://doi.org/10.1038/s41467-019-12537-3
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 8

Abstract

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Annular dark field scanning transmission electron microscopy is able to distinguish the contrasts between light elements. Here, the authors directly image the bonding configurations of oxygen and nitrogen atoms in defective graphene, and surprisingly identify instances of unusual triple-coordinated oxygen with three carbon neighbors.