Dresden 2006 – scientific programme

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HL: Halbleiterphysik

HL 31: Organic semiconductors

HL 31.5: Talk

Wednesday, March 29, 2006, 15:30–15:45, POT 51

Novel fullerene-derivatives for plastic solar cells — •Tobias Erb¹, Uladzimir Zhokhavets¹, Harald Hoppe¹, Paul Denner¹, Gerhard Gobsch¹, Steffi Sensfuss², Lars Blankenburg², and Elisabeth Klemm³ — ¹Institute of Physics, Ilmenau Technical University, 98693 Ilmenau, Germany — ²TITK Institut Rudolstadt, Physical Material Research and Functional Polymer Systems, 07407 Rudolstadt, Germany — ³Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany

We have investigated several fullerene-derivatives in pristine films or in bulk heterojunctions with polymers. Their structural properties were studied by X-ray diffraction in grazing incidence geometry. The lattice symmetry and the size of the fullerene and polymer nanodomains were determined. Furthermore, the optical properties were studied with spectral ellipsometry. The influence of various annealing steps on the film properties were investigated, too. The X-ray findings show particularly, under which conditions fullerene-derivates crystallize. Solar cells have been optimised using the results from X-ray and were characterized under AM 1.5 standard solar irradiation simulation.