To improve photoelectrochemical PEC activity of hematite, the modification of energy band by doping 3d transition metal ions Cu and Ti into -Fe2O3 were studied via the first-principles calculations with density function theory DFT+U method. The results show that the band gap of hematite is 2.1 eV and n-type dopant Ti improves the electric conductivity, confirmed by recent experiments. The p-type dopant Cu enhances the utilization ratio of solar energy, shifts both valance, and conduction band edges to a higher energy level, satisfying hydrogen production in the visible light driven PEC water splitting without voltage bias.
Mendeley saves you time finding and organizing research
Choose a citation style from the tabs below