Unraveling the Effects of Fe Incorporation on High-Performance Water-Splitting Photoanodes.

ABSTRACT: Although it is known that iron (Fe) significantly alters the electrocatalytic activity of nickel (Ni)-based materials, little attention has been paid to the effects of Fe impurities on the photoelectrochemical (PEC) properties of solar-driven water-splitting photoanodes. Herein, we elucidate the crucial role of Fe in model metal-insulator-semiconductor (MIS) Si photoanodes decorated with Ni nanoparticles (NPs), known for their high performance in photoinduced water splitting. Our results demonstrate that residual Fe strongly influences the photoanodes' junction energetics and photovoltaic properties. We show that the synergistic effects (electrocatalytic/photovoltaic) caused by Fe doping explain the high performance previously reported for these model photoanodes. Crucially, Fe incorporati

SUBMITTER: Klahan K 

PROVIDER: S-EPMC12903853 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature