Photoelectric Conversion Properties of the LaFeO 3 Cathode for Photoelectrochemical Capacitors
Abstract
We investigated the photoelectrical conversion properties of various rare-earth ferrites ( RE FeO 3 ) as photoelectrochemical capacitor cathode materials. Among electrodes of LaFeO 3 with different crystallinities, the electrode using it prepared by solid-state synthesis showed the highest photovoltage. Its highest crystallinity probably suppressed the electron–hole recombination to promote the hole accumulation. In various RE FeO 3 (LaFeO 3, NdFeO 3, GdFeO 3, and ErFeO 3 ), electrical conductivity and photovoltage were increased with increasing rare-earth ion size. We consider that hole accumulation was facilitated because overlapping between Fe 3d and O 2p orbitals became weaker by broadening of the Fe–O–Fe bonding angle with increasing rare-earth ion size in the orthorhombic perovskite structure.
Fields of Study & Subjects
Iron oxide chemistry and applications
Multiferroics and related materials
Advanced Photocatalysis Techniques
Publication details
- Journal / source
- ACS Applied Optical Materials
- Publisher
- American Chemical Society (ACS)
- Volume
- 4
- Issue
- 2
- Pages
- 325–331
- Publication date
- 26 January 2026
- Language
- EN