2D Vacancy Confinement in Anatase TiO₂ for Enhanced Photocatalytic Activities.

ABSTRACT: Light-driven energy conversion devices call for the atomic-level manipulation of defects associated with electronic states in solids. However, previous approaches to produce oxygen vacancy (V_O) as a source of sub-bandgap energy levels have hampered the precise control of the distribution and concentration of V_O. Here, a new strategy to spatially confine V_O at the homo-interfaces is demonstrated by exploiting the sequential growth of anatase TiO₂ under dissimilar thermodynamic conditions. Remarkably, metallic behavior with high carrier density and electron mobility is observed after sequential growth of the TiO₂ films under low pressure and temperature (L-TiO₂) on top of high-quality anatase TiO₂ epitaxial films (H

SUBMITTER: Yoon M 

PROVIDER: S-EPMC12004899 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature