Berlin 2015 – scientific programme
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DS: Fachverband Dünne Schichten
DS 39: Poster Session II
DS 39.30: Poster
Thursday, March 19, 2015, 16:00–18:30, Poster F
Highly conductive polythiophene brushes and its application for Organic Solar Cell — •Ravi-Kumar Divakar1,2, Ji-Ling Hou2, Rene Schubel1, Tao Zhang1, Lars Müller-Meskamp2, Karl Leo2,3, Rainer Jordan1,3, and Ihsan Amin1,3 — 1Makromolekulare Chemie, Technische Universität Dresden, 01069 Dresden, Germany — 2Institut für Angewandte Photophysik, Technische Universität Dresden, 01062 Dresden, Germany — 3Centre for Advancing Electronics Dresden, Technische Universität Dresden, George-Schumannstrasse 11, 01187 Dresden, Germany
Conductive polymers, especially polythiophene (PT) and its derivatives have attracted intensive interest both in research and industry due to its potential application for optoelectronic devices such as organic field effect transistors (OFETs), organic light emtting devices (OLEDs) and organic solar cells (OSCs). For most applications, PT is dissolved in a good solvent such as chlorobenzene, and then spin-coated onto dielectric substrates such as SiO2. However, the spin-coated PT film may form a wrongly oriented polymer chains which may result in a low conductivity of the film. Here, we report on fabrication of PT brushes via direct photografting on aminofunctionalized surfaces. The resulted polymer brush chains have ``out of plane'' orientations and thus show a high conductivity. We foresee the highly conductive polythiophene brushes would have potential applications in OLEDs, OFETs and OSCs.