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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 24: Poster Session I

CPP 24.35: Poster

Montag, 16. März 2020, 17:30–19:30, P3

Real-time observations of alkali metal doped 6-Phenacene films — •Matthias Zwadlo, Martin Hodas, Alexander Gerlach, Nadine Russegger, Berthold Reisz, and Frank Schreiber — Institut für Angewandte Physik, Universität Tübingen, Germany

The characterization of growth and structure formation in molecular und hybrid systems is an important topic in fundamental organic semiconductor research. In order to study and influence this process different real-time methods have to be used [1]. A promising strategy for tuning the properties of these materials is alkali metal doping, which for example, can lead to superconductivity under specific circumstances [2]. In this work, the growth and structure formation of 6-Phenacene doped with potassium has been investigated. Thin films of pure 6-Phenacene have been grown in ultra-high vacuum (UHV) and investigated with x-ray, AFM and optical methods. Furthermore, grazing incidence wide angle scattering (GIWAXS) measurements of thin films of 6-Phenacene with potassium doping were performed in-situ during growth at PETRA 3 (beamline P03) in Hamburg. First results show small distortions in crystal structure after potassium doping. The results allow us to get a better understanding on the structural behavior and growth process in theory and experiment.

[1] Hosokai, T., Gerlach, A., Hinderhofer, A., Frank, C., Ligorio, G., Heinemeyer, U., * Schreiber, F. Appl. Phy. Lett. , 97(6), 9 (2010) doi:10.1063/1.3478450

[2] Mitsuhashi, R., Suzuki, Y., Yamanari, Y. et al. Nature 464, 76 (2010) doi:10.1038/nature08859