SKM 2023 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.16: Poster
Montag, 27. März 2023, 18:00–20:00, P3
Humidity Stable Thermoelectric Hybrid Materials for A Self-Powered Sensing System — •Suo Tu1, Ting Tian1, Tianxiao Xiao1, Shanshan Yin1, Julian Heger1, Guangjiu Pan1, Shujin Hou2, Aliaksandr Bandarenka2, Matthias Schwartzkopf3, Stephan Roth3, and Peter Müller-Buschbaum1,4 — 1Technical University of Munich, TUM School of Natural Sciences, Department of Physics, Chair for Functional Materials, 85748 Garching — 2Technical University of Munich, TUM School of Natural Sciences, Department of Physics, Physik der Energiewandlung und -speicherung, 85748 Garching — 3DESY, 22607 Hamburg — 4MLZ, TUM, 85748 Garching
Highly sensitive and humidity-resistive detection of the most common physical stimuli is of primary importance for practical application in a real-time monitoring. Here, we report a simple yet effective strategy to achieve a highly humidity-stable hybrid composite that enables simultaneous and accurate pressure and temperature sensing in a single sensor. The improved electronic performance was due to the enhanced planarity of PEDOT and charge transfer between PEDOT:PSS and multi-walled carbon nanotubes (MWCNT) by strong π-π interaction. The preferred electronic pathway induced by robust morphology in the hybrid composite is responsible for the high humidity stability. These observations have been recognized by Grazing-incidence wide/small-angle X-ray scattering (GIWAXS/GISAXS), Raman, FTIR, and electrochemical impedance spectroscopy (EIS).