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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 15: Poster I
CPP 15.46: Poster
Monday, March 18, 2024, 18:00–20:00, Poster C
Organic Solar Cells for Space Application: Investigation of the Nanostructure and Degradation Effects Due to Mechanical Stress — •Jan Darsow1, Lukas V. Spanier1, Christian Gscheidle2, and Peter Müller-Buschbaum1,3 — 1TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 2TUM School of Engineering and Design, Chair of Astronautics, 85748 Garching, Germany — 3TUM, MLZ, 85748 Garching, Germany
Organic solar cells (OSCs) are emerging as a promising candidate as an energy source for space applications because of their high gravimetric power density and flexible nature. This would save fuel and space in a rocket flight. However, several challenges must be addressed for OSCs to fulfil their potential in space. Following a previous project that deployed OSCs in space on a suborbital rocket, this work aims to further investigate the degradation of OSCs due to the harsh conditions during space flights. Primarily the degradation due to intense mechanical stress will be investigated. OSCs are exposed to extreme accelerations and vibrations during rocket launch and re-entry. This will be simulated with a shaker stress test followed by an investigation of the OSCs changed structural and electronic properties. The examined OSCs are based on a BTP-4F and PTQ-2F bulk heterojunction (BHJ) and are fabricated on glass and flexible PET substrates. Another topic of this work is research on the effects of annealing the BHJ, which leads to a tuning of the absorption spectrum.
Keywords: organic solar cells; space; degregation; mechanical stress