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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 54: Poster Session 3

CPP 54.15: Poster

Donnerstag, 3. April 2014, 15:00–19:00, P2

Implementing a OPV slot dye coating device and determining the ramifications on morphology and device lifetimes — •Sebastian M. Günther, Christoph J. Schaffer, and Peter Müller-Buschbaum — TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany

Organic photovoltaics (OPV) represent a highly investigated technology with great advantages in comparison to current PV technologies. Even though recent organic PV devices are reaching efficiencies beyond 10%, there is still a substantial amount of research needed. That regards especially to analysis of morphology, which is a key parameter to efficient devices and also affects degradation as well as device lifetime. Therefore particularly the processing method is of interest as it is expected to have an extensive influence on the morphology. Currently investigated devices are generally processed via spin coating although this technique is not viable for large scale production. Thus the influence of a printing method on the structural characteristics will be investigated on the basis of samples produced by positive shim mask slot dye coating. This coating method for OPVs is a technique that allows for very thin film application provided that a very low viscosity solution (~1 mPas) is used. For further investigation a new printing device will be implemented. Thereby created films will be analyzed using X-ray reflectivity (XRR), optical and atomic force microscopy (OM, AFM) and UV/Visible light spectroscopy (UV/Vis). The morphology on a nanometer scale will be probed with grazing incidence wide and small angle scattering methods using X-rays and/or neutrons.