Dresden 2011 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 11: Poster: New Instruments and Methods
CPP 11.10: Poster
Monday, March 14, 2011, 17:30–19:30, P2
Quantitative determination of network porosity and degree of pore filling for inorganic-organic hybrid structures — Gunar Kaune1, Martin Haese-Seiller2, Reinhard Kampmann2, Jean-Francois Moulin2, Qi Zhong1, and •Peter Müller-Buschbaum1 — 1TU München, Physik Department, LS Funkt. Mat., James-Franck-Str. 1, 85748 Garching, Germany — 2Institut für Werkstoffforschung, Helmoltz Zentrum Geesthacht, 21502 Geesthacht, Germany
In hybrid solar cells an inorganic semiconductor such as titania is in contact with a photoactive and semiconducting polymer. To achieve a large interface between both, bicontinuous network structures are very promising. We investigate the infiltration of a titania network structure with poly(N-vinylcarbazole) (PVK). The titania films show a hierarchical pore structure with mesopores 52 nm in size and additional large macropores with a diameter of about 180 nm. With the new method time-of-flight grazing incidence small-angle neutron scattering (TOF-GISANS) the quantitative porosity and the degree of pore filling are determined for different infiltration approaches [1].
[1] Kaune et al; J. Poly. Sci. Part B. 48, 1628-1635 (2010)