BPCPPDYSOE21 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 14: Poster Session II - Complex Fluids and Perovskites
CPP 14.25: Poster
Dienstag, 23. März 2021, 16:30–18:30, CPPp
In situ phase and texture evolution tracking of the formation of 2-step slot-die coated perovskite by GIWAXS — •Manuel A. Scheel1, Lennart K. Reb1, Renjun Guo1, Matthias Schwartzkopf2, Stephan V. Roth2,3, and Peter Müller-Buschbaum1,4 — 1Lehrstuhl für Funktionelle Materialien, Physik-Department — 2DESY, Notkestr. 85, 22607 Hamburg — 3KTH, Department of Fibre and Polymer Technology, SE-100 44 Stockholm, Sweden — 4Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
Perovskite slot-die coating is a particularly promising deposition technique for hybrid perovskite materials. With the perovskite absorber being the key material in a perovskite-based solar cell, structure and morphology control during thin-film formation is essential in achieving highly homogeneous and thus high-performing layers. To better understand morphology evolution and crystallization kinetics during film formation, we investigate the conversion of slot-die coated lead iodide and slot-die coated methylammonium iodide to perovskite by in situ grazing-incidence wide-angle X-ray scattering (GIWAXS). In this work we study the thin-film morphology and texture evolution during the conversion process triggered by thermal annealing. We track the phase evolution and their respective crystal orientations over time. As a reference, we investigate spin-cast PbI2, MAI and MAPbI3 thin-films and look into methodical differences that can influence the film quality.