Regensburg 2022 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster 2
CPP 17.6: Poster
Tuesday, September 6, 2022, 11:00–13:00, P2
In situ GISAXS printing of inorganic-organic hybrid nanostructures based on biopolymer templating — •Linus F. Huber1, Stephan V. Roth3, Kun Sun1, Manuel A. Reus1, and Peter Müller-Buschbaum1,2 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching — 2MLZ, TU München, 85748 Garching — 3Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany
Inorganic-organic hybrid nanostructures are interesting for the energy conversion through the thermoelectric effect. Thermoelectric generators based on abundant, environmentally friendly and affordable materials have historically had low effitiencies. The electrical conductivity, the Seebeck coefficient and the thermal conductivity need to be individually improved, to significantly enhance the thermoelectric figure of merit. Nanostructuring can improve these parameters and maximize the performance of thermoelectric materials. Beta-lactoglobulin is a bovine whey protein that is used as a template during sol-gel synthesis. Different titania thin film morphologies can be achieved by changing the pH-value and the beta-lactoglobuline concentration. To investigate the different titania morphologies, in situ GISAXS, GIWAXS and SEM are used. In situ GISAXS printing enables a time resolved investigation of the structure formation, domain sizes and domain distances. UV-Vis and Pl are used to analyze differences in the optical properties of the thin films. These structural and optical changes are then correlated with measurements of the Seebeck coefficient and the electrical conductivity.