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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 12: Poster 1
CPP 12.46: Poster
Monday, September 5, 2022, 18:00–20:00, P1
Improving morphology and efficiency of slot-die coated perovskite solar cells — •Christoph G. Lindenmeir1, Andrea Vitaloni1, Lennart K. Reb1, Manuel A. Reus1, and Peter Müller-Buschbaum1,2 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching — 2MLZ, TU München, 85748 Garching
During the last years perovskite solar cells (PSCs) received high attention in industry and research for sustainable power production. Especially due to their low material costs, low weight, high power conversion efficiencies, and the possibility to fabricate them via simple solution-based deposition techniques like slot-die coating or spray coating. Because of the possibility of up-scaling and using minimal material, slot-die coating is one of the most promising techniques to produce high efficiency PSCs. In this work, we compare the properties of slot-die coated PSCs with different perovskite compositions. The perovskite layer is printed out of a solution, containing different ratios of lead iodide (PbI2), methylammonium iodide (MAI), formamidinium iodide (FAI), and methylammonium chloride (MACl) in a solvent mixture of 2-methoxyethanol (2-ME) and dimethyl sulfoxide (DMSO). To improve the film quality of the printed perovskite layer, the influence of nitrogen gas quenching is extensively studied and the print process optimized. The resulting high-quality thin films are analyzed with optical and structure characterization methods like spectroscopy and X-ray scattering methods. For further information, current-voltage and external quantum efficiency measurements are carried out.