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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 22: Poster Session III - Charged Soft Matter and Theory and Simulation

CPP 22.13: Poster

Mittwoch, 24. März 2021, 16:30–18:30, CPPp

Morphology investigation of the active layer of hybrid solar cells with TOF-GISANS — •Volker Körstgens1, Lautaro Diaz Piola1, Christina Geiger1, Julian Heger1, Lucas Kreuzer1, Anna-Lena Oechsle1, Tobias Widmann1, Matthias Nuber2, Klara Stallhofer2, Gaetano Mangiapia3, Hristo Iglev2, Reinhard Kienberger2, and Peter Müller-Buschbaum11TU München, Physik Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — 2TU München, Physik Department, LS Laser- und Röntgenphysik, James-Franck-Str. 1, 85748 Garching — 3Helmholtz-Zentrum Geesthacht am Heinz Maier- Leibnitz Zentrum, Lichtenbergstr. 1, 85747 Garching

One aspect for the development of non-conventional solar cells should be the sustainability of the production process of devices. Following this idea, we developed hybrid solar cells which can be processed out of aqueous solution. The active layer of these devices is based on laser-processed titania nanoparticles dispersed in a water-soluble thiophene-based polyelectrolyte. The active layers were produced with two of the most common deposition techniques: spray deposition and slot die coating. With these techniques the thickness of layers can be easily controlled and the scale-up toward the coating of large areas is done with low effort. We investigated the morphology of the deposited active layers with time of flight - grazing incidence small angle neutron scattering (TOF-GISANS). The difference of the morphology of these layers is presented and its impact on the performance of devices is discussed.

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