Polaronic contributions to Fermi level tolerance in perovskite-type oxide electroceramics (A02)

• Subject Area: Synthesis and Properties of Functional Materials ; Computer-Aided Design of Materials and Simulation of Materials Behaviour from Atomic to Microscopic Scale
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 463184206

In this project we study the formation of free and bound small polarons, first in barium-based ferrate and cobaltate perovskites and their mixed compounds and subsequently in transition metal doped Ba2In2O5 and Zn-doped NBT-BT. The goal is to understand the effect of self-trapped charges and bound polarons on the Fermi level tolerance of these materials and accordingly to predict compositional variations, which lead to Fermi level stabilization at the desired energy.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1548: FLAIR - Fermi Level Engineering Applied to Oxide Electroceramics
• Applicant Institution: Technische Universität Darmstadt
• Project Head: Professor Dr. Karsten Albe