Ru-P pair sites boost charge transport in hematite photoanodes for exceeding 1% efficient solar water splitting.

ABSTRACT: Fast transport of charge carriers in semiconductor photoelectrodes are a major determinant of the solar-to-hydrogen efficiency for photoelectrochemical (PEC) water slitting. While doping metal ions as single atoms/clusters in photoelectrodes has been popularly used to regulate their charge transport, PEC performances are often low due to the limited charge mobility and severe charge recombination. Here, we disperse Ru and P diatomic sites onto hematite (DASs Ru-P:Fe₂O₃) to construct an efficient photoelectrode inspired by the concept of correlated single-atom engineering. The resultant photoanode shows superior photocurrent densities of 4.55 and 6.5 mA cm^-2 at 1.23 and 1.50 V_RHE, a low-onset potential of 0.58 V_RHE, and a high applied b

SUBMITTER: Gao RT 

PROVIDER: S-EPMC10319015 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature