Utilizing Spray Coating for the Fabrication of Organic Electronics
Time: Wed 2024-12-11 14.00
Location: F3 (Flodis), Lindstedtsvägen 26 & 28, Stockholm
Video link: https://kth-se.zoom.us/j/68612966196
Language: English
Subject area: Fibre and Polymer Science
Doctoral student: Marie Betker , Fiberprocesser, Deutsches Elektronen Synchrotron DESY
Opponent: Professor Jochen Gutmann, University of Duisburg-Essen, Tyskland
Supervisor: Professor Stephan V. Roth, Biokompositer, Ytbehandlingsteknik, Fiberprocesser; Professor Daniel Söderberg, Linné Flow Center, FLOW, Wallenberg Wood Science Center, Teknisk mekanik, Fiberprocesser; Professor Mats Johansson, Wallenberg Wood Science Center, Ytbehandlingsteknik
QC 20241112
Embargo t.o.m. 2025-12-11 godkänt av skolchef Amelie Eriksson Karlström via e-post 2024-12-03
Abstract
The present thesis explores the utilization of spray coating for the sustainable fabrication of cellulose-based organic electronics in the framework of four different studies. The scope of this work is to contribute to the ongoing green transformation of our society in the context of industrial processing, responsible production, and clean energy. In this regard, spray coating was applied as a low-cost, fast, and industrially relevant technique for both the production as well as the quality enhancement of functional organic polymer films. In addition to that, wood-based nanocellulose, a non-toxic and biodegradable polymer, was used to replace synthetic polymers as transparent, flexible matrix- and substrate material, and as dispersing agent for the fabrication of highly conductive electrodes. Finally, spray solvents were evaluated regarding their sustainability, industrial fitness, and thus suitability for the large-scale production of organic electronics. In the course of this, various kinds of functional, hybrid organic films and foils were fabricated. Their properties were correlated with their respective structure and morphology, with a special focus on surface-sensitive analysis techniques, namely grazing incidence X-ray scattering, atomic force microscopy, scanning electron microscopy, and sheet resistance measurements.