Regensburg 2013 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 65: Poster: Organic electronics and photovoltaics (CPP; jointly with HL, O)
HL 65.4: Poster
Mittwoch, 13. März 2013, 16:30–18:30, Poster C
Increased conductivity of PEDOT:PSS for application in organic solar cells: electrical and morphological investigations — •Christoph Heller1, Claudia M. Palumbiny1, Volker Körstgens1, Yuan Yao1, Weijia Wang1, Stephan V. Roth2, and Peter Müller-Buschbaum1 — 1Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany — 2HASYLAB at DESY, Notkestrasse 85, 22603 Hamburg, Germany
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS) is commonly used as a transparent electrode for flexible electronic devices. Its conductivity plays a crucial role for the device performance.
In our study, the conductivity of PEDOT:PSS films has been increased via a post treatment method reaching the conductivity order of indium tin oxide (ITO) which is commonly used as an electrode in organic solar cells. Among other techniques the effect of the post treatment has been investigated using advanced scattering methods such as grazing incident small angle x-ray scattering (GISAXS). Furthermore, the influence of doping PEDOT:PSS, different post treatments, the treatment time and the effect of the number of post treatments have been investigated focusing on conductivity and morphological changes. The results are very promising for using post treated PEDOT:PSS as an electrode in ITO-free organic solar cells.