Dresden 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 50: Poster: Organic Electronics and Photovoltaics, Molecular Excitations
CPP 50.29: Poster
Mittwoch, 22. März 2017, 18:30–21:00, P3
Measuring C60 diffusion in the low bandgap copolymer PCDTBT — •Denys Priadko1, Thomas Müller1, Christina Saller2, Tobias Hahn1, Julian Kahle1, Steffen Tscheuschner1, Peter Strohriegl2,3, and Anna Köhler1,3 — 1Experimental Physics II, University of Bayreuth, 95440, Bayreuth, Germany — 2Macromolecular Chemistry I, University of Bayreuth, 95440, Germany — 3Bayreuth Institute of Macromolecular Science (BIMF), University of Bayreuth, 95440, Bayreuth, Germany
Although diffusion of fullerenes in blend or bilayer heterostructures has a strong impact on the efficiency and long-term stability of organic solar cells and other organic electronic devices, little is known about the diffusion coefficient of fullerenes in different materials. We have recently shown that the C60 diffusion in the high bandgap homopolymer polyfluorene can be reduced by a factor of 1000 by crosslinking the polymer. We have now extended our approach to the low bandgap copolymer PCDTBT. We study how crosslinking PCDTBT suppresses the diffusion of C60 into it compared to inserting a LiF layer between the PCDTBT and the C60.