Regensburg 2010 – wissenschaftliches Programm

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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 29.5: Poster

Mittwoch, 24. März 2010, 15:00–17:30, Poster A

Influence of electric and magnetic fields during film growth of phthalocyanines — •Florian Latteyer¹, Vladimir Plyashkevich², Tamara Basova², Heiko Peisert¹, and Thomas Chassé¹ — ¹University of Tübingen, Institute for Physical and Theoretical Chemistry, Tübingen, Germany — ²Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia

Due to their remarkable physical and chemical properties, phthalocyanines (Pcs) are discussed for applications in devices such as organic solar cells, organic field effect transistors, organic light emitting diodes etc. because of their easy substitutions with side chains to tailor their properties. Many planar, non-substituted Pcs have a molecular point group of D4h, there are several representatives of this class of molecules which are non-planar and exhibit C4v symmetry resulting in a permanent electric dipole moment. As a consequence, the presence of electric fields can affect growth of these molecules[1]. Since Pcs posses a high delocalized conjugated pi-system, a ring current could be induced into this pi-system by applying exterior magnetic fields[2].

Thin films of different planar and non-planar Pcs are prepared in UHV applying electric and magnetic fields during organic molecular beam deposition. The molecular orientation in these films was studied by polarized Raman- and optical spectroscopy as well as AFM.

[1]Schuster, B. E.; Basova, T. V.; Peisert, H.; Chassé, T. Chemphyschem 2009, 10, 1874.

[2]Kolotovska, V.; Friedrich, M.; Zahn, D. R. T.; Salvan, G. J. Cryst. Growth 2006, 291, 166.