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HL: Fachverband Halbleiterphysik

HL 36: Poster III

HL 36.13: Poster

Wednesday, February 27, 2008, 16:30–19:00, Poster D

Micro-Analysis of fullerene crystals in annealed P3HT-PCBM blends — •Maik Bärenklau, Gerhard Gobsch, and Harald Hoppe — Institute of Physics, Ilmenau University of Technology, Weimarer Straße 32, 98693 Ilmenau, Germany

We observe micron-sized needles and other structures of the fullerene derivative PCBM in thin film blends with P3HT upon heat treatment using optical microscopy. Depending on the annealing temperature more and more elongated structures are observed. For lower fullerene contents smaller crystallites are grown. Particular grown fullerene structures and the corresponding structure-property-relationships are discussed in view of solar cell application.