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Schultz, Maximilian ; Leupold, Nico ; Schötz, Konstantin ; Moos, Ralf ; Panzer, Fabian:
Impact of microstructure of hybrid perovskite powders on the mechanical properties of completely dry processed perovskite layers via pressing.
2019
Veranstaltung: DPG-Frühjahrstagung
, 31.03.-05.04.2019
, Regensburg.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Poster
)
Abstract
Optoelectronic devices based on hybrid perovskites have undergone a remarkable development within the last few years. However, state of the art processing approaches such as solution processing or evaporation suffer from an intrinsically high complexity, as the actual perovskite crystallization and its film processing happen simultaneously and are inextricably interconnected. Here we present an alternative, entirely dry processing approach, which decouples perovskite crystallization and film formation, by using readily prepared perovskite powders and produce films by appropriate mechanical pressure treatment. We show how the used pressure and the powder microstructure, i.e. particle size and stoichiometry affect the mechanical stability, compactness and surface roughness of the pressed layers. We further address how specific temperature treatment during the pressing step can be used to improve the properties of the pressed layer.