Regensburg 2013 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 32: Poster: Organic Semiconductors
CPP 32.10: Poster
Mittwoch, 13. März 2013, 16:30–18:30, Poster C
Aggregate Structures and Electron Transport Anisotropy in High Mobility n-type Low Bandgap Copolymer — •Robert Steyrleuthner1, Riccardo di Pietro1, Scott Himmelberger2, Brian Collins3, Frank Polzer4, Holm Kirmse4, Marcel Schubert1, Zhihua Chen5, Harald Ade3, Alberto Salleo2, Antonio Facchetti5, and Dieter Neher1 — 1University of Potsdam, Institute of Physics — 2Stanford University, Materials Science and Engineering — 3North Carolina State University, Department of Physics, — 4Humboldt University Berlin, Institute of Physics — 5Polyera Corporation, Illinois
We have recently explored the photophysics of the high electron mobility (0.85 cm2/Vs) conjugated copolymer P(NDI2OD-T2), also known as Polyera ActivInk N2200. From these studies we could estimate, that approx 45% of the polymer chains in thin films exist in an aggregated (pi-stacked) conformation mainly independent of the preparation routine [1]. However, special solvents mixtures can induce changes of the orientation and the molecular structure of the chain aggregates which we prove by GIXD and TEM measurements. We further investigate the structure property relation by correlating the morphology with the electron transport anisotropy in P(NDI2OD-T2). [1] R. Steyrleuthner et al., J. Am. Chem. Soc., 2012, 134 (44)