Abstract
In the present paper, photo-induced carrier dynamics and charge transfer processes on porous anodic TiO2, modified with Cu2O via pulse electrodeposition, are studied with steady-state and modulated photocurrent measurements in a wide range of experimental conditions. Surface composition was estimated using XPS. The obtained oxides are p-type semiconductors that effectively absorb visible light, and rates of charge transfer and recombination are strongly dependent on synthesis conditions. A tentative mechanism of photo-induced hydrogen evolution on such materials is proposed using recent simulation results from the literature and the dependence of formal charge transfer rate constant on potential.
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