| 摘要 |
A substrate is disclosed with a first surface bearing a coating that comprises a compound region, the compound region comprising a photocatalyst, the photocatalyst being a first material, the compound region also comprising a second material, wherein said first and second materials are different materials, and wherein the coating has a total thickness of at least about 50 angstroms but less than about 400 angstroms. The substrate when uncoated has a first visible reflectance, wherein the substrate when bearing the coating has a second visible reflectance, and wherein the second visible reflectance is no more than about 3% greater than the first visible reflectance, each such visible reflectance being a film-side visible reflectance measured off the first surface of the substrate. |
