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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: Poster Session I
CPP 24.23: Poster
Montag, 16. März 2020, 17:30–19:30, P3
In-situ investigation of sputter deposition of electrodes for non-fullerene organic photovoltaics application — •Xinyu Jiang1, Simon J. Schaper1, Matthias Schwartzkopf2, Stephan V Roth3, Jonas Drewes4, Oleksandr Polonskyi4, Thomas Strunskus4, and Peter Müller-Buschbaum1 — 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
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. Electrodes of aluminum are widely used in organic photovoltaic devices. For understanding the mechanism of Al 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 sputter 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.