Regensburg 2010 – scientific programme

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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 29.37: Poster

Wednesday, March 24, 2010, 15:00–17:30, Poster A

Investigation and Control of the Nanomorphology in Solution Cast Thin Polymer-Fullerene P3HT:PCBM Films — •Benedikt Brenneis¹, Benjamin Schmidt-Hansberg¹, Monamie Sanyal², Esther Barrena², Michael Klein³, Philip Scharfer¹, Dagmar Gerthsen⁴, and Wilhelm Schabel¹ — ¹KIT Thermal Process Engineering / Thin Film Technology, Karlsruhe, Germany — ²Max Planck Institute, Stuttgart, Germany — ³KIT Light Technology Institute, Karlsruhe, Germany — ⁴KIT Laboratory for Electron Microscopy, Karlsruhe, Germany

In this work we investigate the drying process of solution cast thin polymer-fullerene films with respect to the interplay of process conditions and device properties. The established material system P3HT:PCBM for organic photovoltaic devices is solution cast and subsequently dried under several drying conditions varying the drying temperature, the drying air flow speed in a drying channel and other coating properties. By using atomic force microscopy (AFM), grazing incidence x-ray diffraction (GIXRD), scanning transmission electron microscopy (STEM) and more utilities the film morphology and optoelectronic properties are investigated systemically and correlated with the film formation history.