Regensburg 2013 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 69: Poster Session: II-VI semiconductors; Organic semiconductors; Heterostructures

HL 69.9: Poster

Mittwoch, 13. März 2013, 16:00–20:00, Poster A

Single crystals by vapor and solution growth of organic semiconductors — •Jan-Peter Bäcker, Natalija van Well, and Cornelius Krellner — Physikalisches Institut, Goethe-Universität Frankfurt, Deutschland

The growth and investigations of single crystals of small molecule organic semiconductors is of crucial importance for the deeper understanding of these materials. We apply both a horizontal vapor-growth technique as well as growth from solutions to fabricate mm-sized single crystals of Phenanthrene, Pentacene, and Dibenzopentacene. In this contribution, we present the optimized crystal growth parameters together with investigations of the structural properties.

Recently, it was found that in some of these materials superconductivity can emerge after intercalation with alkali-earth metals [1]. Therefore, these materials are promising with respect to their semiconducting as well as superconducting properties. Here, we show the results of our preliminary intercalation experiments on single crystals to investigate the crossover from semi- to superconducting behaviour.

[1] M. Xue et al., Scientific Reports 2, 389 (2012).