Titelangaben
Kahle, Frank-Julian ; Bauer, Irene ; Strohriegl, Peter ; Köhler, Anna:
Influence of Crosslinking on Charge Carrier Mobility in Crosslinkable
Polyfluorene Derivatives.
In: Journal of Polymer Science Part B: Polymer Physics.
Bd. 55
(2017)
Heft 1
.
- S. 112-120.
ISSN 1099-0488
DOI: https://doi.org/10.1002/polb.24259
Abstract
Carrier mobility is a key parameter for the application of conjugated polymers. In this work, a series of polyfluorenes (PF2/6) with different fractions of crosslinkable acrylate groups is investigated. Mobility measurements are carried out to assess the influence of crosslinking with different photoinitiators on the performance of the material. For the regime of low to medium charge carrier density, relevant for OLEDs and OPVs, we used a novel technique based on the injection of charge carriers from the electrodes of an optoelectronic device: MIS-CELIV (MIS: metal-insulator-semiconductor). For large charge carrier densities we performed OFET measurements. We find that using optimized conditions crosslinking does not influence the hole mobility in the investigated system. Furthermore, we demonstrate that the crosslinking process may be triggered solely by thermal activation and UV-illumination without the need of any initiator. Thus, densely crosslinked networks are obtained without the formation of undesired decomposition products from added photoinitiator.
Weitere Angaben
Publikationsform: | Artikel in einer Zeitschrift |
---|---|
Begutachteter Beitrag: | Ja |
Keywords: | free radical polymerization; acrylate; MIS-CELIV; photoinitiator; polyfluorene (PF2/6) |
Institutionen der Universität: | Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie |
Titel an der UBT entstanden: | Ja |
Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
Eingestellt am: | 20 Jan 2017 10:32 |
Letzte Änderung: | 16 Mär 2023 07:57 |
URI: | https://eref.uni-bayreuth.de/id/eprint/35691 |