Berlin 2012 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 34: Organic thin films II: Interface spectroscopy

DS 34.1: Vortrag

Donnerstag, 29. März 2012, 15:00–15:15, H 2032

Nature of interactions at interfaces between transition metal phthalocyanines and metals — •Heiko Peisert, Fotini Petraki, Umut Aygül, Florian Latteyer, Johannes Uihlein, and Thomas Chassé — University of Tuebingen, Institute of Physical Chemistry, Auf der Morgenstelle 18, 72076 Tuebingen, Germany

Transition metal Pcs (TMPcs) are potential candidates for various applications, most recently they are considered as a promising material for the development of low dimensional molecular magnets or organic spintronic devices. Although electronic properties of TMPcs have been extensively investigated, results are controversial discussed. Moreover, the nature of the interaction at several interfaces is still unclear. In particular, the involvement of the central metal atoms seems to be a key issue for the electronic interface properties. The contribution gives an overview about our recent studies on the interaction of TMPcs (TM: Mn [1], Fe, Co [2,3], Ni) at metal interfaces (Au, Ag) using mainly photoexcited electron spectroscopies (photoemission, resonant photoemission, X-ray absorption). In all cases, charge transfer processes from metallic substrates to the metal 3d levels of the phthalocyanine molecule occur. However, the detailed electronic situation depends clearly on the system under consideration.

[1] F. Petraki, H. Peisert et al., J. Phys. Chem. C 115 (2011) 21334.

[2] H. Peisert, I. Biswas, U. Aygül, A. Vollmer, T. Chassé, Chem. Phys. Lett. 493 (2010) 126.

[3] F. Petraki, H. Peisert et al., J. Phys. Chem. Lett. 1 (2010) 3380.