Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 41: Crystallization, Nucleation, Self Assembly II (joint session CPP/DY, organized by CPP)
CPP 41.3: Vortrag
Mittwoch, 9. März 2016, 16:45–17:00, H42
Following the crystallization in PEDOT:PSS films during printing — Claudia M. Palumbiny1, Feng Liu2, Thomas P. Russell2,3, Alexander Hexemer4, Cheng Wang4, and •Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany — 2Materials Science Division, LBNL, Berkeley, USA — 3Department of Polymer Science and Engineering, UMass, Amherst, USA — 4Advanced Light Source, LBNL, Berkeley, USA
PEDOT:PSS is one of the most promising electrode materials beyond ITO. Printed films of PEDOT:PSS are compared with ethylene glycol (EG)-doped PEDOT:PSS films and films that are treated with EG after printing and annealing, so-called EG-post-treatment. In-situ GIWAXS is used to determine the structure of the molecules in the crystallites during the printing. During film formation, the dependence of different processing conditions on the resulting interchain coupling (characterized by the pi-pi stacking distance), molecular orientation, and crystallite size are determined as a function of film composition. Thus, understanding the film evolution during the printing process allows for directed modification of solutions and printed films for enhanced organic electronic device performance.