BPCPPDYSOE21 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 22: Poster Session III - Charged Soft Matter and Theory and Simulation
CPP 22.1: Poster
Mittwoch, 24. März 2021, 16:30–18:30, CPPp
In-situ investigation of the thermal stability of thermoelectric thin films based on ionic liquid post-treated PEDOT:PSS — •Anna Lena Oechsle1, Julian E. Heger1, Nian Li1, Shanshan Yin1, Sigrid Bernstorff2, and Peter Müller-Buschbaum1,3 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany — 2ELETTRA Sincrotrone Trieste S. C. p. A., 34149 Basovizza TS, Italy — 3Heinz Maier-Leibnitz Zentrum (MLZ), TU München, 85748 Garching, Germany
In total around 66% of the global produced primary energy is lost as waste heat, for example from industrial or everyday life processes. Thermoelectric generators, as they enable the direct conversion of a temperature gradient into electrical power, are therefore considered a promising technique to recycle these large amounts of heat waste. Especially, organic thermoelectric polymers are attractive, owning some advantages like low cost, lightness and high mechanical flexibility, low or no toxicity, as well as a usually low thermal conductivity. In our work we research the positive effect of ionic liquid (IL) treatment on the thermoelectric properties of semi-conducting PEDOT:PSS thin films. Therefore, we measure parameters, like the Seebeck coefficient, electrical conductivity, and furthermore examine the inner film morphology with scattering techniques like grazing incidence small angle x-ray scattering (GISAXS). In addition to find the influence of ILs treatment on the morphology-function relation of the PEDOT:PSS thin films, we also investigate the thermoelectric performance stability these films under operation at elevated temperatures.