SKM 2021 – wissenschaftliches Programm
CPP 5.5: Poster
Dienstag, 28. September 2021, 17:30–19:30, P
Sputter-depostion vs. spraying: effect of doping technique on the structural and thermoelectric properties of P3HT-based thin films — •Benedikt Sochor1, Constantin Harder1, Anna-Lena Oechsle2, Matthias Schwartzkopf1, Alexei Vorobiev3, Peter Müller-Buschbaum2, and Stephan V. Roth1,4 — 1Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany — 2Technical University Munich, Physics Department, James-Franck-Str. 1, 85748 Garching, Germany — 3Institue Laue-Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France — 4KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden
Poly(3-hexylthiophen-2,5-diyl) (P3HT) is one of the most prominent semiconducting, conjugated polymers in the fields of organic electronics and photovoltaics. This study aims for correlating process and fabrication parameters and the structural changes with the overall thermoelectric performance of P3HT and P3HT:PMMA films. Especially, we focus on two routes of gold (Au) doping, namely sputter and spray deposition techniques. The structure of the resulting polymer composites indicated distinct differences whether the gold is sprayed or grown on the surface as shown by AFM as well as neutrons and X-ray reflectivity measurements. During in situ GISAXS experiments, the growth and structure of the gold particles was mapped, which indicated the presence of sub-nanometer sized gold clusters in case of sputter deposition.