SKM 2023 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.31: Poster
Monday, March 27, 2023, 18:00–20:00, P3
In situ study of superlattice self-assembly during slot-die coating of perovskite quantum dot films. — •David P. Kosbahn1, Manuel A. Reus1, Christopher R. Everett1, Guangjiu Pan1, Matthias Schwartzkopf2, Stephan V. Roth2,3, and Peter Müller-Buschbaum1,4 — 1TUM School of Natural Sciences, Chair for Functional Materials, Garching — 2DESY, 22607 Hamburg — 3Department of Fibre and Polymer Technology, KTH, Stockholm, Sweden — 4MLZ, TUM, Garching
Research into quantum dots (QDs) of metal halide perovskites has become increasingly popular due to their stability and tunable optoelectronic properties. Their controllable surface chemistry and simple preparation make them a promising alternative to bulk perovskite solar cells. The power conversion efficiency of CsxFA1−xPbI3 QD solar cells has been steadily rising, up to a recent record efficiency of more than 16%. However, the alignment and self-assembly of the colloidal precursor into a superstructure during film fabrication via slot-die coating is not yet well-understood. In this work, we study the formation of perovskite QD films using in situ grazing-incidence X-ray scattering on different substrates and at different temperatures, to achieve a better understanding of the kinetic processes during solvent evaporation.