Dresden 2011 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 8: Poster: Organic Semiconductors
CPP 8.3: Poster
Montag, 14. März 2011, 17:30–19:30, P2
Morphology and electronic triplet states of regioregular P3HT and PCPDTBT ultrathin films — •Stefan Väth1, Hannes Kraus1, Andreas Sperlich1, Mario Zerson2, Robert Magerle2, Carsten Deibel1, and Vladimir Dyakonov1,3 — 1Experimental Physics VI, Julius Maximilian University Würzburg, D-97074 Würzburg — 2Chemische Physik, TU Chemnitz, D-09107 Chemnitz — 3ZAE Bayern, Div. Functional Materials for Energy Technology, D-97074 Würzburg
The intensively studied donor polythiophene P3HT and the novel low band-gap donor-acceptor copolymer PCPDTBT are used in very well performing solution processed organic solar cells. Therefore, understanding the materials’ electronic properties and in particular the influence of morphology on them is crucial for optimizing the device preparation as well as the synthesis of novel organic semiconductors. We gain access to the morphological bearing on the triplet state employing angle resolved optically detected magnetic resonance (ODMR) on very thin ordered films, a technique sensitive to the alignment of exciton triplet states. Furthermore we attempt to link these results with high resolution Nanotomography images of the film morphology.