Berlin 2024 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 7: Composites and Functional Polymer Hybrids II
CPP 7.3: Talk
Monday, March 18, 2024, 15:30–15:45, H 0106
Thickness-dependent efficiency of fully sprayed organic thin film thermoelectrics — •Benedikt Sochor1,2, Simon Schraad1,3, Linus Huber4, Alexander Hexemer2, Tim Laarmann1,5, Sarathlal Koyiloth Vayalil1,6, Peter Müller-Buschbaum4,7, and Stephan V. Roth1,8 — 1Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany — 2Advanced Light Source, Lawrence Berkeley National Laboratory, 6 Cyclotron Rd, Berkeley, 94720, CA, USA — 3University Hamburg, Department of Physics, Notkestr. 85, 22607 Hamburg, Germany — 4TUM School of Natural Sciences, Chair for Functional Materials, James-Franck-Str. 1, 85748 Garching, Germany — 5The Hamburg Centre for Ultrafast Imaging CUI, Luruper Chaussee 149, 22761 Hamburg, Germany — 6UPES, Applied Science Cluster, 248007 Dehradun, India — 7MLZ, TUM, Lichtenbergstr. 1, 85748 Garching, Germany — 8KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden
Flexible organic electronics are one of the most sought-after devices in the field of photovoltaics, sensors, smart wearables or energy harvesting. This study focuses on the relationship between thickness and thermoelectric efficiency of thin films based on the semiconducting polymer poly (3-hexylthiophene-2,5-diyl) (P3HT), which shows potential as thermoelectric generators in the ambient temperature regime when doped with chloroauric acid (HAuCl4). Using ellipsometry and reflectivity data as well as thermoelectric characterizations, optimal film parameters for thermoelectric thin film devices were identified.
Keywords: thin film; thermoelectics; spray deposition; ellipsometry; X-ray reflectivity