Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.23: Poster
Montag, 1. April 2019, 17:30–19:30, Poster B1
Post-treatment of thermoelectric polymer thin films to influence their thermoelectric properties — •Anna-Lena Oechsle, Nitin Saxena, and Peter Müller-Buschbaum — TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany
Thermoelectric materials are of great interest in terms of waste heat recovery and the use of solar thermal energy. Especially thermoelectric polymers are attractive, as they own some advantages over so far used inorganic thermoelectric materials, such as low cost, high mechanical flexibility, low or no toxicity, light weight and intrinsically low thermal conductivity. A way to evaluate the thermoelectric property of a material is the power factor PF=S2σ. This parameter depends on the Seebeck coefficient S and the electrical conductivity σ, which again are affected by the electronic and morphological features of the polymer. In order to investigate ways to influence these features and improve the power factor, we fabricate thin semi-conducting polymer films and post-treat them in different ways. With measurements of the Seebeck coefficient, the electrical conductivity, UV-Vis, layer thickness changes and determination of the structure we attempt to find a morphology-function relation.