Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 20: Focus: Functional Polymer Hybrids I
CPP 20.7: Vortrag
Dienstag, 8. März 2016, 11:45–12:00, H51
Thermoelectric thin films based on a polymer/nanoparticle nanocomposite — •Nitin Saxena1,2, Anton Greppmair3, Mihael Coric4, Jan Wernecke5, Stefanie Langner5, Michael Krumrey5, Eva M. Herzig4, Martin S. Brandt3, and Peter Müller-Buschbaum1,2 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany — 2Center for NanoScience, LMU München, 80539 München, Germany — 3TU München, Walter-Schottky-Institut and Physik-Department, 85748 Garching, Germany — 4TU München, Munich School of Engineering, 85748 Garching, Germany — 5PTB, BESSY II Helmholtz-Zentrum Berlin, 12489 Berlin, Germany
Thermoelectric materials pose a compelling technology for power generation from renewable energies, since temperature gradients are transformed into voltages and thus electrical power. So far, highly efficient thermoelectrics comprise rare and/or toxic inorganic materials, and require cost- and energy-intensive fabrication. These points hinder the large-scale application of thermoelectrics. In order to overcome these limitations, we pursue a hybrid approach combining the semiconducting polymer blend PEDOT:PSS for its high electrical conductivity and inorganic nanoparticles in order to reduce thermal conductivity within the thin film. We investigate the influence of the nanoparticles on the morphology by GISAXS and correlate this with changes in the thermoelectric behavior. In addition, we also investigate the thermal conductivity of pristine PEDOT:PSS and of the hybrid film by IR thermography, in order to ultimately calculate the figure-of-merit ZT.