To promote the photoelectrochemical property, we usually take the following methods:
(1) Loading precious simple metal substance such as Pt, Ag, Au. Lay WO3 over FTO with Ag grid, the testing photocurrent density is two times than the one without Ag.
(2) Doping certain amount of metal ion or non-metal ion in tungsten oxide. Doping Ta5+ in WO3 photo electrode, the experiment shows that photoelectric conversion rate of doping electrode is much higher.
(3) Recombine WO3 with other inorganic semiconductor material, use impregnation method to prepare CuO/WO3 composite material. It turns out that CuO/WO3 shows better photo catalytic ethylal.
(4) Recombine WO3 with organic material. Prepare PBrT/WO3 and PMOT/WO3 composite material. After testing it shows that the composite one has better electrochemical property.