Designing conjugated polymers for organic electronic applications
"Designing conjugated polymers for organic electronic applications"
B. Voit (a,b); T. Erdmann (a,b); A. Kiriy (a,b).
a) Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
b) Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062 Dresden, Germany
The microelectronics industry and especially the organic/flexible electronics industry continue to demand new innovative polymeric materials. We will demonstrate examples of newly developed polymers of high charge mobility as very promising, printable and stable active materials of printed organic field effect transistors (OFETs). Controlled polymerization techniques like Kumada-Catalyst-Transfer-Polycondensation allow to prepare polymeric semiconductors under mild conditions with very low catalyst amount resulting in very high molar mass products with low defects improving performance. Donor-acceptor polymers have been fine-tuned in their electronic properties and microstructure by molecular composition design. Charge mobility in diketopyrrolopyrrole (DPP) polymers could be significantly increased by improving the synthetic procedures and film processing. Furthermore, efficient new dopants have been developed for DPP polymers.