Dresden 2011 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Poster: Organic Semiconductors

CPP 8.1: Poster

Montag, 14. März 2011, 17:30–19:30, P2

Spectroscopic Signatures of Anions on C60, C70 and C80 — •Moritz Liedtke^1,2, Carsten Deibel², and Vladimir Dyakonov^1,2 — ¹Energy Technology, Bavarian Centre for Applied Energy Research (ZAE Bayern), 97074 Würzburg, Germany — ²Experimental Physics VI, Julius-Maximilian University of Würzburg, 97074 Würzburg, Germany

We applied photo-induced absorption technique to find the signatures of electrons on fullerenes in polymer:fullerene blends used for organic photovoltaic and pure fullerene layers. These negative charge carriers show different excitation energies into higher states which seem to depend only on the fullerene size and not on the sidechains of the fullerenes or the polymer used. The knowledge of these signatures might offer new insights in the process of charge carrier generation by exciting only the polymer in the blend while probing the electron on the fullerene.