Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 41: Poster Session I (Semiconductor Substrates: Epitaxy and growth; Semiconductor Substrates: Adsorbtion; Semiconductor Substrates: Solid-liquid interfaces; Semiconductor Substrates: Clean surfaces; Oxides and insulators: Epitaxy and growth; Oxides and insulators: Adsorption; Oxides and insulators: Clean surfaces; Organic, polymeric and biomolecular films - also with adsorbates; Organic electronics and photovoltaics, Surface chemical reactions; Heterogeneous catalysis; Phase transitions; Particles and clusters; Surface dynamics; Surface or interface magnetism; Electron and spin dynamics; Spin-Orbit Interaction at Surfaces; Electronic structure; Nanotribology; Solid/liquid interfaces; Graphene; Others)

O 41.36: Poster

Dienstag, 23. März 2010, 18:30–21:00, Poster B1

Characterization of the Interface Interaction of Cobalt on Top of Copper- and Iron-Phthalocyanine — •Felix Schmitt, Jens Sauther, Yaou Smets, Stefan Lach, and Christiane Ziegler — Department of Physics, University of Kaiserslautern, D-67663 Kaiserslautern, Germany

A promising field of applications of organic semiconductors arises from the combination of organic materials and spintronics. In this field a deeper understanding of injection and transport as well as manipulation of spinpolarized charge carriers is necessary. The charge injection of organic semiconductor devices in general is co-determined by the geometric and the electronic structure of the specific interface and analogous behaviour is expected for the spin injection.

This motivates investigations of the interface between ferromagnetic metallic substrates and organic semiconductors. Here, a photoemission- (UPS, IPES and XPS) and IR-study of ferromagnetic cobalt on top of copper- and iron-phthalocyanine is presented. These measurements suggest chemical reactions in the interfacial region: For example, an oxidation of the Co atoms as well as a reduction of the Cu at the interface between Co and CuPc could be detected. Furthermore a diffusion of the Co into the layers of the organic substrate and the formation of Co clusters on the metal phthalocyanine surface occur.