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DS: Fachverband Dünne Schichten

DS 12: Postersession DS

DS 12.18: Poster

Montag, 7. März 2016, 17:00–19:00, Poster A

Influence of Graphene on Charge Transfer between CoPc and Metals: The Role of Graphene-Substrate Coupling — Johannes Uihlein¹, Małgorzata Polek¹, Mathias Glaser¹, Hilmar Adler¹, David Balle¹, Ruslan Ovsyannikov², •Milutin Ivanovic Ivanovic¹, Alexei B. Preobrajenski³, Alexander V. Generalov³, Thomas Chassé¹, and Heiko Peisert¹ — ¹University of Tübingen, Institute of Physical and Theoretical Chemistry, 72076 Tübingen, Germany — ²Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 12489 Berlin, Germany — ³Lund University, MAX-Laboratory, 22100 Lund, Sweden

The electronic structure of cobalt phthalocyanine (CoPc) on Pt(111), graphene/Pt(111) and Au-intercalated graphene/Ni(111) is investigated by photoemission and X-ray absorption spectroscopy. For CoPc on metal substrates, significant changes of the shape of the spectra indicate a charge transfer from the substrate to the Co ion of CoPc. The disturbance of the graphene electronic structure by interaction with underlying substrate accompanied by a doping of graphene has been found to affect electronic properties of adsorbed CoPc considerably.