| 초록 |
Iron oxide (hematite, Fe2O3) has recently attracted much attention for solar-powered photoelectrochemical (PEC) water oxidation, but it has very short hole diffusion length and low carrier mobility, which causes considerable recombination of photo-generated electrons and holes. In this study, three-dimensional tin oxide (SnO2) nanohelix (NH) structures were fabricated as scaffolds for a thin Fe2O3 layer on fluorine-doped SnO2 glass substrate by oblique angle deposition method using electron beam evaporator. SnO2 NH structures based photoelectrode can simultaneously enhance light absorption and charge separation and transport for efficient PEC water splitting. PEC properties of this hybridized photoelectrode will be investigated and the advantages of three-dimensional SnO2 NH structures as scaffolds for very thin Fe2O3 layer as well as its potential for practical application will be discussed in detail. |
