Dresden 2017 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 50: Poster: Organic Electronics and Photovoltaics, Molecular Excitations
CPP 50.37: Poster
Mittwoch, 22. März 2017, 18:30–21:00, P3
Direct Observation of Intraband Relaxation and Exciton Dispersion Relation in Perylene-diimide H-aggregates — •Wouter Koopman1, Stefano Toffanin2, and Michele Muccini2 — 1Universität Potsdam, Potsdam, Deutschland — 2CNR-ISMN, Bologna, Italien
The excited state properties of organic molecular solids are determined by the aggregation behavior of the constituent molecules. In extreme cases of J- and H-aggregates super-radiance or a complete suppression of photoluminescence can be observed. Here we report the direct observation of the intraband relaxation of H-aggregate excitons in a PTCDI-C13 thin film, by time resolved photoluminescence spectroscopy.