Regensburg 2016 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 92: Postersession DS/HL

HL 92.23: Poster

Donnerstag, 10. März 2016, 16:00–19:00, Poster A

Preparation and Characterization of Mixed Organic Thin Films Containing Sexithiophene and Perfluorinated Sexithiophene — •Berthold Reisz, Simon Weimer, Rupak Banerjee, Christopher Lorch, Johannes Dieterle, Giuliano Duva, Alexander Hinderhofer, Alexander Gerlach, and Frank Schreiber — Universität, Tübingen, Deutschland

We study molecular mixed thin films of α-Sexithiophene (6T), a well known organic p-type semiconductor with high hole mobility, together with its perfluorinated counterpart, the so far rarely studied n-type tetradecafluoro-α-sexithiophene (PF6T). Thin films of this donor-acceptor system with various mixing ratios have been grown on several substrates in ultrahigh vacuum by coevaporation. The films have been examined with x-ray and ultraviolet photoelectron spectroscopy (XPS/UPS), atomic force microscopy (AFM), x-ray diffraction (XRD), absorption measurements and variable angle spectroscopic ellipsometry (VASE). Connections between mixing ratio, morphology, crystalline structure and optical properties are discussed, following previous studies [1].

[1] A. Hinderhofer, F. Schreiber. Organic-Organic Heterostructures: Concepts and Applications. ChemPhysChem, 13(3):628-643, 2012.