Regensburg 2022 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 19: Perovskite and Photovoltaics 2

CPP 19.4: Vortrag

Mittwoch, 7. September 2022, 10:30–10:45, H38

Real-time texture and phase evolution tracking of the annealing process of slot-die coated perovskite by in situ GIWAXS — •Manuel A. Reus¹, Lennart K. Reb¹, Alexander F. Weinzierl¹, Christian L. Weindl¹, Renjun Guo¹, Tianxiao Xiao¹, Matthias Schwartzkopf², Andrei Chumakov², Stephan V. Roth², and Peter Müller-Buschbaum^1,3 — ¹TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching — ²DESY, 22607 Hamburg — ³MLZ, TU München, 85748 Garching

In perovskite solar cell material research the thin-film morphology determines the quality of the absorber material and consequently device performance. To scale up material deposition towards, e.g., roll-to-roll compatible techniques, the influence of the deposition method on morphology needs to be known to control the process. Here, we apply in situ grazing-incidence wide-angle x-ray scattering (GIWAXS) on the annealing process of slot-die coated lead iodide and slot-die coated methylammonium iodide, that react to perovskite under heat. We track the conversion in real-time and extract relevant parameters concerning texture and phase evolution. As a reference, we show GIWAXS data of spin-cast equivalent systems and show the resulting morphology and kinetics differences traced back to the deposition method.