Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
DS: Fachverband Dünne Schichten
DS 17: Poster Session I
DS 17.64: Poster
Dienstag, 13. März 2018, 18:15–20:15, Poster B
Interactions at the interface of TMPcs and graphene covered metal surfaces: Influence of fluorination and intercalation — •David Balle, Peter Grüninger, Reimer Karstens, Hilmar Adler, Thomas Chassé, and Heiko Peisert — Institute of Physical and Theoretical Chemistry, Auf der Morgenstelle 18, 72076 Tuebingen, University of Tuebingen, Germany
Recent years have seen increasing research efforts in the field of transition metal phthalocyanines (TMPc) due to their special electronic, optical and magnetic properties making them potential suitable candidates for organo-electronic applications.
To manipulate interface interactions, which can drastically alter said properties, Graphene buffer layers offer a valuable tool. On Ni(111), a strongly bound and coupled Graphene layer behaves vastly different in regards to its buffer properties than an uncoupled, intercalated layer on the same substrate. The degree of coupling and interaction between the Graphene layer and the substrate is subject to the intercalating element, though, providing a method to finely tune the coupling by carefully choosing the intercalant, like Fe, Cu or Ge. Other electronic parameters of the TMPc, such as substitution of the terminal hydrogen atoms with fluorine, also play a crucial role if an interface interaction persists through the buffer layer like in the case of CoPcF16 while the corresponding interaction is blocked for CoPc on intercalated Graphene on Ni(111) [1]. Investigations were carried out using mainly X-ray absorption and photoemission spectroscopies (XAS, PES).
[1] Balle et al., J. Phys. Chem. C 2017, 121, 18564-18574