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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 44: Hybrid, Organic and Perovskite Optoelectronics and Photovoltaics V
CPP 44.2: Vortrag
Donnerstag, 12. März 2026, 10:00–10:15, ZEU/LICH
Perovskite Solar Cells under Orbit-Like Thermal Cycling — •Simon Alexander Wegener1, Christoph Gernot Lindenmeir1, Thomas Baier1, Xiaojing Ci1, Sigrid Bernstroff2, and Peter Müller-Buschbaum1 — 1TUM School of Natural Sciences, Chair for Functional Materials, Garching, Germany — 2Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, Italy
Perovskite solar cells offer strong potential for space power systems due to their high visible-light absorbance, thin active layers, and efficiencies comparable to silicon. These features provide exceptional power-to-weight ratios, and solution processing reduces manufacturing and launch costs relative to multi-junction gallium arsenide cells. Initial demonstrations have confirmed their operability in space. Key challenges remain, particularly the extreme temperature swings in low Earth orbit. Our work examines these stresses using operando grazing-incidence wide-angle X-ray scattering (GIWAXS) to track structural changes in the perovskite during illumination and temperature cycling. Synchrotron radiation enables the necessary temporal resolution to study the multilayer device stack, which combines materials with differing mechanical and thermal properties. Complementary photoluminescence measurements reveal associated changes in optical and electrical behavior. Across -125°C to +100°C, the perovskite shows changes in crystal phase, anisotropic strain, and optoelectronic response. These findings clarify the coupled mechanical and electronic effects driving performance loss and enable strategies to enhance durability of perovskite solar cells for space applications.
Keywords: thermal cycling; space; perovskite; GIWAXS; temperature