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 29.16: Poster
Mittwoch, 24. März 2010, 15:00–17:30, Poster A
IR studies on the interaction of Ca and Mg with the blue emitter material Ir(cn-pmbic)3 — •Tobias Glaser1, Martin Binder1, Annemarie Pucci1, Christian Lennartz2, and Christian Schildknecht2 — 1Kirchhoff-Institut für Physik, Universität Heidelberg, INF 227, 69120 Heidelberg — 2BASF SE, 67056 Ludwigshafen
Ca and Mg play an important role as cathode materials in organic light emitting devices (OLEDs). The interaction of these metals with the blue phosphorescent emitter material Ir(cn-pmbic)3 is investigated by infrared (IR) spectroscopy. Thin films of the organic material are deposited by vapour sublimation on a gold substrate under UHV conditions. The deposition of Ca on the organic layer gives rise to new features in the IR-spectrum of the sample. These new features are supposed to be related to dynamic charge transfer processes. On the other hand, Mg does not seem to form a conducting layer on the organic material.