Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Poster Session III
CPP 37.47: Poster
Mittwoch, 3. April 2019, 11:00–13:00, Poster B1
Charge transfer effects in donor and acceptor mixed systems of DNTT and PDIF-CN2 — •Nadine Rußegger, Lena Merten, Alexander Hinderhofer, and Frank Schreiber — Institut für Angewandte Physik, Universität Tübingen, Germany
One very important and fundamental process for organic semiconductors (OSCs) is the charge transfer effect between electron donor and electron acceptor molecules.
In this work, the charge transfer effect of weakly interacting organic semiconductor thin film mixtures is comprehensively investigated. We choose dinaphtho[2,3-b:2’,3’-f]thieno[3,2-b]thiophene (DNTT) as donor and N,N’-1H,1H-perfluorobutly-dicyanoperylene-3,4:9,10-bis(dicarboxyimide) (PDIF-CN2) as acceptor.
The structural, optical and electronic properties of the intermolecular interactions were characterized using a range of experimental methods. The structure of the mixed phase polymorph was evaluated by surface X-ray scattering. The charge transfer in the equimolar mixed film of DNTT and PDIF-CN2 was characterized by absorption, photoluminescence as well as in-situ differential reflectance spectroscopy.
The results allow us to determine correlations between structural properties and charge transfer effects within the mixed systems of DNTT and PDIF-CN2.