| abstract |
A novel film that can be used as a photocatalyst film having improved photoelectric conversion efficiency compared to the prior art, a method for producing the same, and a hydrogen generator suitable for generating hydrogen from an aqueous solution using such a film I will provide a. A film formed of a semiconductor oxide that absorbs light and generates electrons and holes, the semiconductor oxide containing W with an atomic ratio of W to Fe of 0.02 to 0.08. A semiconductor oxide film made of Fe 2 O 3 and a method for producing the same, and a hydrogen generator using the film. [Selection] Figure 1 |