Nanostructured hybrid perovskite films by aerosol-based cold deposition for controlled ion and electron transport (B04)

• Subject Area: Synthesis and Properties of Functional Materials ; Experimental Condensed Matter Physics ; Physical Chemistry of Molecules, Liquids and Interfaces, Biophysical Chemistry
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 492723217

In Project (Köhler/Moos) we aim to separate electron from ion transport in halide perovskites (HP) through nanopattering, which is achieved by depositing different HP compositions with varying grain sizes via powder aerosol deposition. This can yield periodic variations or composition gradients over multiple length scales. Additives or optional pressure and heat treatment are used to modify the interfaces at the grain boundaries. Using electrical and optical spectroscopy we address how the confinement by the interfacial structure can suppress ionic currents while maintaining electron transport.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1585: Structured functional materials for multiple transport in nanoscale confinements
• Applicant Institution: Universität Bayreuth
• Project Heads: Professorin Dr. Anna Köhler; Professor Dr.-Ing. Ralf Moos