Regensburg 2010 – scientific programme

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DS: Fachverband Dünne Schichten

DS 29: Poster: Molecular Spintronics, Biomolecular and Functional Organic Layers, Organic Electronics and Photovoltaics, Plasmonics and Nanophotonics, Organic Thin Films, Nanoengineered Thin Films, Thin Film Characterisation,

DS 29.54: Poster

Wednesday, March 24, 2010, 15:00–17:30, Poster A

Identifikation of molecular orbitals of FePc near the chemical potential. — •Friedrich Roth, Andreas König, Roberto Kraus, Mandy Grobosch, Thomas Kroll, Martin Knupfer, and Bernd Büchner — IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany

We have studied the electronic structure of iron phthalocyanine (FePc) films at low temperature using electron energy-loss spectroscopy. The electronic excitation spectrum of FePc is rather complex and comprises both π-π^* transitions of the phthalocyanine ligand and transitions that involve the Fe 3d orbitals. The C1s core excitations provide so far unidentified information on the molecular orbitals. They demonstrate that the Fe 3d orbital with e_g symmetry lies energetically in between the highest occupied and the lowest unoccupied ligand state and that it is not fully occupied.