| 摘要 |
PROBLEM TO BE SOLVED: To provide a material having optical responsivity, especially visible light responsivity, using an inexpensive material.SOLUTION: This semiconductor material showing p-type semiconductor characteristics is provided by doping nitrogen and a metal element other than iron in an iron oxide crystal containing hematite crystalline phase. The ratio of the number of nitrogen atoms to the number of iron atoms (in terms of N/Fe) is more than 0 and not higher than 0.05, and the ratio of the number of metal atoms to the number of iron atoms (in terms of metal atom/Fe) is more than 0 and not higher than 0.05. This semiconductor material can be used as a material constituting a photoelectrode, a photocatalyst and a solar cell. |
