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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Poster Session III
CPP 37.48: Poster
Wednesday, April 3, 2019, 11:00–13:00, Poster B1
Mixing behaviour of small molecule organic semiconductors 6T and PDIF-CN2 — •Lena Merten, Nadine Rußegger, Alexander Hinderhofer, and Frank Schreiber — Institut für Angewandte Physik, Universität Tübingen, Germany
Mixtures of small molecule organic semiconductors are a promising research field due to their various applications in organic electronics. For most applications a specific degree of order and mixing is desired, thus the mixing behaviour of dissimilar organic molecules is to be investigated.
We prepared thin films from mixtures of α-sexithiophene (6T) and N,N’-1H,1H-perfluorobutyl-dicyanoperylene-3,4:9,10-bis(dicarboxyimide) (PDIF-CN2), as donor and acceptor type molecules, respectively.
The mixed films exhibit strong long-range phase separation. Film properties were characterized structurally and optically during and after growth. The structural characterizations were done post-growth by AFM and X-ray scattering, the optical investigation by absorption spectroscopy, photoluminescence and ellipsometry, complemented by in-situ differential reflectance spectroscopy to monitor the evolution of optical properties during growth.