Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Poster: Organic Electronics and Photovoltaics

CPP 30.34: Poster

Dienstag, 8. März 2016, 18:15–21:00, Poster B2

Low temperature charge transport characterisation of low band-gap diketopyrrolopyrrole (DPP) based polymers — •Fabian Hoffmann, Benno Buchinger, and Sven Hüttner — Universität Bayreuth, Organic and Hybrid Electronics, MC I

One of the most promising conjugated materials that emerged recently are conjugated polymers based on diketopyrrolopyrroles (DPP). Their semiconducting properties are directly related to their molecular ordering, molecular weight, purity and growth rate. In this context the material shows extraordinary high charge carrier mobilities in an OFET configuration due to the remarkable aggregating properties of the DPP moieties. Furthermore, they are stable at ambient conditions and can reach very low band gaps, which enables an absorption further in the red. At the same time they also show surprisingly low charge carrier mobilities in the bulk. We present temperature dependent OFET measurements to investigate the underlying charge transport processes. In particular, we address the influence of different processing conditions such as temperature and solvent vapour annealing.