Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Poster: Organic Electronics and Photovoltaics, Molecular Excitations

CPP 50.32: Poster

Mittwoch, 22. März 2017, 18:30–21:00, P3

In-situ polymerized PEDOT: Tos thin films for thermoelectric applications — •Mubashar Rafiq, Nitin Saxena, and Peter Müller-Buschbaum — TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching

Thermoelectric materials are an efficient tool to convert waste heat into electrical energy in an environment-friendly manner. These materials make use of the Seebeck effect for the transformation of heat into electrical energy. PEDOT: TOS thin films show higher Seebeck coefficients and conductivities as compared to PEDOT: PSS, and these quantities play a key role for the figure of merit ZT. To improve these quantities an in-situ polymerized PEDOT: TOS is studied with respect to adding additives and performing pre- and- post- treatments of thin films with different chemicals. Measurements of above mentioned quantities are carried out by four probe method and thermo voltage setup. Moreover, we are trying to deduce how these quantities could be affected by polymerization, polymer chain length, morphology, crystallinity and structural changes. For this purpose we use UV-Vis, AFM and x-ray scattering methods.