Regensburg 2004 – scientific programme

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HL: Halbleiterphysik

HL 23: Organische Halbleiter

HL 23.3: Talk

Tuesday, March 9, 2004, 17:15–17:30, H13

Structural anisotropy of different conjugated polymer films — •Tobias Erb¹, Sofiya Raleva¹, Uladzimir Zhokhavets¹, Gerhard Gobsch¹, Bernd Stühn¹, Pavel Schilinsky², Christoph Brabec², Maher Al-Ibrahim³, and Steffi Sensfuss³ — ¹Institute of Physics, Ilmenau Technical University, 98684 Ilmenau, Germany — ²Siemens AG, CT MM 1 Innovative Electronics, 91052 Erlangen, Germany — ³TITK Institute Rudolstadt, Department Functional Polymer Systems, 07407 Rudolstadt, Germany

The morphology and especially the structural anisotropy of thin polymer films are decisive for their optical and transport properties in view of application in organic solar cells. The structural anisotropy of thin spin-coated pure P3OT- (poly[3-octylthiophene]), P3HT- (poly[3-hexylthiophene]), MDMO-PPV-films (poly[2-methoxy, 5-3’,7’-dimethyl-octyloxy]-p-phenylene vinylene) and their blends with fullerene derivatives on miscellaneous substrates (silicon, glass/ITO and glass/ITO/PEDOT) were studied by X-ray diffraction. We have investigated the influence of annealing and the regularity of polymer side chains. In addition, the mean size of polymer crystallites and their orientation within the film have been estimated.