| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photoexcitation type functional device constituting a solar cell and a photocatalyst or the like, which is applied to a substrate material having insufficient durability to high temperatures and ultraviolet light, and which is not restricted in the incident direction of light at its usage, and also to provide its manufacturing method. <P>SOLUTION: A reflecting layer 10 which selectively reflects ultraviolet light (wavelength λ<SB>0</SB>) irradiated at the time of sintering is formed on a transparent plastic substrate 1a beforehand. The reflecting layer 10 is a dielectric multi-layer film which is transparent to the light of wavelength λ<SB>0</SB>and in which a dielectric layer having a high refractive index and a dielectric layer with a low refractive index are alternately repeatedly laminated. A transparent electrode 2 of ITO or the like and a semiconductor particulate layer 3a of titanium oxide or the like are laminated on the reflecting layer 10. Ultraviolet light is irradiated on this semiconductor particulate layer 3a while heating it at the temperature lower than the heat resistant temperature of the substrate 1a and the semiconductor particulates are sintered and the semiconductor layer 3 is formed. Irradiation of ultraviolet light is made from the side of semiconductor particulate layer 3a and, for example, light of wavelength 253.7 nm emitted from a low pressure mercury lamp is used. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
