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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 27: Poster: Organic Electronics and Photovoltaics

CPP 27.2: Poster

Mittwoch, 24. März 2010, 17:30–19:00, Poster C

Analysis of solvent residuals in thin films of conducting polymers — •Markus Schindler, Robert Meier, and Peter Müller-Buschbaum — TU München, Physik-Department LS E13, James-Franck-Str. 1, 85747 Garching (Germany)

Since conducting polymers show widespread application possibilities, e.g. in organic solar cells and organic field effect transistors, it is a serious concern to investigate long-time stability and aging. Aging can be enhanced due to remaining solvent embedded in the polymer matrix of thin films. Remaining solvent affects the mobility of the polymers and results in an ongoing change in the microstructure, which is accompanied by changes in the electrical performance.

We investigated the remaining solvent in thin conducting polymer films with neutron reflectivity, utilising the contrast between protonated and deuterated solvents. In addition, we report surface analysis of different polymer blends based on versatile novel conducting polymers using atomic force microscopy. In these films a spatial resolved analysis concerning the solvent content is obtained with STXM measurements.