SKM 2021 – wissenschaftliches Programm
CPP 5.11: Poster
Dienstag, 28. September 2021, 17:30–19:30, P
Fabrication and characterisation of slot-die coated formamidinium-cesium lead iodide perovskite solar cells — •Alexander Franz Weinzierl1, Manuel A. Scheel1, Lennart K. Reb1, and Peter Müller-Buschbaum1,2 — 1Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany — 2Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
Perovskite solar cells (PSC) are a promising candidate to evolve the solar energy market due to high energy conversion efficiencies and low cost material usage. However, many perovskite absorber compositions suffer from long-term stability problems. Perovskites, composited of formamidinium/caesium lead iodide/bromide (FACs), as the active layer of such solar cells are promising to overcome this issue. Crucial for FACs is the development of a solvent system together with an optimised printing process enabling to produce highly homogeneous layers and, as a result, cells with high performance and low degradation. To achieve this outcome, slot-die coating is examined for depositing the Perovskite ink, especially, since this printing technique is transferable to the scale-up of PSCs towards commercial sizes. In this work inverted slot-die coated FACs solar cells are produced with different solvents. Their film morphology is investigated by microscopy, X-ray diffraction and GIWAXS. Moreover, the cells are characterised and compared via their respective current-voltage characteristic, giving insight into the performance parameters.