Regensburg 2013 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 32: Poster: Organic Semiconductors
CPP 32.6: Poster
Wednesday, March 13, 2013, 16:30–18:30, Poster C
The influence of processing additives on the morphology of bulk herterojunction films — •Weijia Wang1, Martine Philipp1, David Magerl1, Jean-Francois Moulin2, and Peter Müller-Buschbaum1 — 1TU München, Physik Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany — 2HZ Geesthacht at FRM II, Lichtenbergstr.1, 85748 Garching, Germany
In the last decades, photoactive polymers and its applications in organic photovoltaic have attracted tremendous attention. Compared with standard inorganic solar cells, there are plenty of advantages for these materials, such as light weight, easy processibility and low cost. Currently the main drawback is still the low efficiency. It is already observed that the morphology of the herterojuction film plays an important role in organic solar cells. In this work, in order to modify the morphology, different amount of additives are applied in blend system rrP3HT:C61-PCBM. The internal structure is investigated with grazing incidence small angle neutron scattering (GISANS) in time-of flight (TOF) mode. Additionally, the surface morphology is probed with optical microscopy and atomic force microscopy. The effect on molecular level is investigated by absorption.