SKM 2021 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 5: Poster Session I
CPP 5.15: Poster
Tuesday, September 28, 2021, 17:30–19:30, P
Following the morphology formation of printed non-fullerene active layers for solar cells — •Xinyu Jiang1, Suo Tu1, Manuel A. Scheel1, Shanshan Yin1, Matthias Schwartzkopf2, Stephan V. Roth2,3, and Peter Müller-Buschbaum1,4 — 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 — 4Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
Bulk heterojunction (BHJ) organic solar cells have gained significant improvements in the past few years, however, traditional laboratory deposition methods like spin coating are limited to small-scale production. Encouragingly, the emergence of printing techniques and the development of in-situ observation technology open new windows for lager-area device manufacturing and inspection of the formation process of the printed active layer, respectively. We fabricate an active layer, which contains a donor polymer (PDTBT2T-FTBDT) and a non-fullerene acceptor (BTP-4F) with slot-die coating. The structure formation of the polymer domains is followed in-situ during the printing process with GIWAXS and UV-Vis spectroscopy measurements, respectively. Thus, structure evolution is coupled with optical properties during the printing process, thereby providing an understanding of the film formation kinetics of non-fullerene organic BHJ thin films.