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Berlin 2012 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 24: Poster: Organic Semiconductors

CPP 24.12: Poster

Wednesday, March 28, 2012, 11:00–13:00, Poster A

The morphology of flexible all polymer solar cells — •Weijia Wang1, Matthias A. Ruderer1, Ezzeldin Metwalli1, Shuai Guo1, Kai Scherer1, Stephan V. Roth2, Jan Perlich2, and Peter Müller-Buschbaum11TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany — 2HASYLAB at DESY, Notkestr. 85, 22603 Hamburg, Germany

The interest in photoactive polymers and its applications in organic photovoltaics increased in the last decades dramatically due to promising properties such as mechanical stability, light weight, easy processibility and low cost compared to traditional inorganic solar cells. There have been already many studies on organic solar cells, but only little attention has been focused on fully flexible organic solar cells so far. Carbon nanotubes (CNT) are among the most promising candidates of flexible electrode materials, which can be deposited on flexible PET substrates. In this work, CNT/PET substrates are used as electrodes for solar cells. The CNT/PET substrates are characterized with transmission and resistance measurements. The substrates are coated with an electron blocking layer PEDOT:PSS which is modified by methanol to better wet the substrate. The morphology of the PEDOT:PSS layer is investigated with grazing incidence small angle X-ray scattering and atomic force microscopy methods and its thickness is measured with X-ray reflectivity.

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