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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 6: Poster Session I - Molecular Electronics and Wetting

CPP 6.11: Poster

Montag, 22. März 2021, 16:30–18:30, CPPp

Influence of solvent composition on optical and morphological properties of PTQ10:BTP-4F bulk heterojunctions — •Lukas Spanier, Xinyu Jiang, and Peter Müller-Buschbaum — TU München, Physik-Department, Lehrstuhl für Funktionelle Materialien, Garching, Germany

Organic solar cells have recently gained increasing attention due to their rapidly increasing efficiencies as well as the relatively easy scalability in their production. However, their manufacture relies heavily on the use of halogenated solvents, as organic solar cells made with environmentally friendly solvents often suffer from major performance degradation. We investigate and compare the changes in morphology and the electro-optical behaviour of PTQ10:BTP-4F thin films processed from various solvents, utilising grazing-incidence X-ray scattering methods. We show the impact of solvent composition on the formation of polymer:non-fullerene acceptor bulk heterojunction films, affecting the resulting change in the performance of the organic solar cells.