Ball-milled p-type CuGaO2 as a semitransparent scaffold for dye-sensitized molecular photocathodes
Open Access
- 30 September 2026
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 55 (10)
Abstract
CuGaO2 has limited application for dye-sensitized molecular photocathodes because of the large particle size obtained through high-temperature solid-state synthesis. Planetary ball-milling produced fine CuGaO2 particles for semitransparent electrodes while preserving the delafossite structure and Cu(I) electronic state. Photocathodes modified with a Ru tris-bipyridine-type photosensitizer exhibited enhanced photocathodic reduction currents at more positive potentials than pristine CuGaO2 and NiO electrodes despite a lower amount of immobilized dye.Keywords
Funding Information
- Japan Society for the Promotion of Science
- Japan Society for the Promotion of Science (JP21K05240)
- Ebara Hatakeyama Memorial Foundation
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