Regensburg 2019 – scientific programme
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 10: Ferroics - Domains and Domain Walls
KFM 10.9: Talk
Tuesday, April 2, 2019, 12:05–12:20, H47
Charge-carrier localization at ferroelectric domain walls in BiFeO3 — •Sabine Körbel and Stefano Sanvito — School of Physics and CRANN, Trinity College Dublin, Ireland
BiFeO3 is a prototype material for investigating the photovoltaic effect in ferroelectrics, and it has been suggested that ferroelectric domain walls in BiFeO3 and other ferroelectrics are beneficial for separating charge carriers.
In order to elucidate the role of the domain walls in the separation of photogenerated charge carriers, we studied electron and hole localization at ferroelectric domain walls in BiFeO3, using density-functional theory.
In this talk we will discuss the localization behavior of separate electrons and holes and that of electron-hole pairs.