| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photocatalyst system developing photocatalytic effect by the irradiation with light of a visible light region (wavelength: 420 nm or more) or an infrared region (wavelength: 750 nm or more). <P>SOLUTION: The photocatalyst system operated within a visible light/infrared region is assembled by combining a photocatalyst using light of an ultraviolet region heretofore with an up-conversion material being a material for converting visible light/infrared rays to ultraviolet rays/visible light. That is, the photocatalyst system comprises the photocatalyst and the up-conversion material. <P>COPYRIGHT: (C)2003,JPO |
