Regensburg 2007 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 5: Organic Interfaces (SYOE 1)
DS 5.2: Vortrag
Montag, 26. März 2007, 14:45–15:00, H32
A photoemission electron microscopy investigation of diindenoperylene thin films — •Maria Benedetta Casu1, Indro Biswas1, Mathias Nagel1, Peter Nagel2, Stefan Schuppler2, and Thomas Chassé1 — 1University of Tübingen, Institute of Physical and Theoretical Chemistry, Tübingen, Germany — 2Forschungszentrum Karlsruhe, Institut für Festkörperphysik, Karlsruhe, Germany
Organic-based displays are widely present on the market, used for HI-FI cars, mp3 player, and mobile phones, as well as in television screens, without mentioning e-paper, one of their most fascinating applications. It is very important to reach a deep general understanding of their electronic, structural, and morphological properties that despite the numerous investigations is still missing. We present the results of photoemission electron microscopy (PEEM) investigations on diindenoperylene thin films deposited on polycrystalline gold. The thin films were prepared by using organic molecular deposition and thickness-dependent investigations were performed. PEEM is a very powerful tool that can give a deep insight in in-situ growth. The opportunity to use a synchrotron radiation source allows the simultaneous investigation of morphology, structure, and electronic characteristics. All these aspects usually investigated by using separated techniques, often on differently prepared samples, are univocally related in our results with special attention to the molecular arrangement. This approach, in synergy with micro near- edge x-ray absorption fine structure, helps in gain a detailed knowledge also in case of critical phenomena like polymorphism in organic materials.