BPCPPDYSOE21 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 6: Poster Session I - Molecular Electronics and Wetting
CPP 6.14: Poster
Montag, 22. März 2021, 16:30–18:30, CPPp
In-situ sputter deposition of electrodes for non-fullerene organic photovoltaics application — •Xinyu Jiang1, Simon J. Schaper1, Matthias Schwartzkopf2, Stephan V. Roth2,3, Jonas Drewes4, Oleksandr Polonskyi4, and Peter Müller-Buschbaum1,5 — 1Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, Garching, Germany — 2DESY, Notkestr. 85, 22607 Hamburg, Germany — 3KTH, Department of Fibre and Polymer Technology, SE-100 44 Stockholm, Sweden — 4Christian Albrechts-Universität zu Kiel, Materialverbunde Lehrstuhl, Materialwissenschaft Institut, Kaiserstr. 2, D-24143 Kiel, Germany — 5Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
Electrode quality of photovoltaic devices plays a very important role in device performance. The metal growth process directly influences the material density, electrical conductivity and interface contact of the electrode. For understanding the mechanism of aluminium cluster growth on non-fullerene organic solar cells, we use in-situ grazing-incidence small-angle X-ray scattering (GISAXS) to observe detailed information during the sputtering process. We find that the early stages of Al cluster growth on the non-fullerene active layers determine the later stages and strongly influence the percolation threshold. Furthermore, the cluster growth varies for active layers with an additional electron blocking layer. These findings are of great importance for improving the performance of the photovoltaic devices.