Engineering band structuring via dual atom modification for an efficient photoanode.

ABSTRACT: Efficient carrier separation is important for improving photoelectrochemical water splitting. Here, the morphology modification and band structure engineering of Ta₃N₅ are accomplished by doping it with Cu and Zr using a two-step method for the first time. The initially interstitially-doped Cu atoms act as anchors to interact with subsequently doped Zr atoms under the influence of differences in electronegativity. This interaction results in Cu,Zr_g-Ta₃N₅ having a dense morphology and higher crystallinity, which helps to reduce carrier recombination at grain boundaries. Furthermore, the gradient doping of Zr generates a band edge energy gradient, which significantly enhances bulk charge separation efficiency. Therefore, a photoanode bas

SUBMITTER: Wang X 

PROVIDER: S-EPMC10793595 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature