Enhanced Water Splitting by Fe2O3-TiO2-FTO Photoanode with Modified Energy Band Structure
Figure 3
Photoelectrochemical I-V characteristics of the samples with the stacking structures of (a) Fe2O3/FTO, (b) Fe2O3/TiO2/FTO, and (c) TiO2/Fe2O3/FTO, which were all heat treated at 500°C for 10 min in the air. Curve (d) was obtained from Fe2O3/TiO2/FTO double heat treated under the same condition as above: 1st after H-TiNT coating on FTO and 2nd after Fe2O3 coating on the heat-treated H-TiNT/FTO.
