| 摘要 |
A solar energy collector and process for preparing it, in which the collector is characterized by a semiconductive coating (12) formed by the co-deposition of a metal (13) and a dielectric material (14) and having a relatively high solar absorptivity and low infrared emissivity. The simultaneous deposition of the metal (13) and dielectric material (14) may be carried out by vapor-vacuum deposition techniques onto a substrate (10) and results in a semiconductive coating (12) of a solid solution of atoms of the metal dispersed in a matrix of the dielectric material. In the preferred practice, the amounts of metal (13) and dielectric material (14) deposited are varied during the co-deposition and desirably in reverse order, so that there are reverse concentration gradients of each component within the coating (12) in which the concentration of metal is the greatest adjacent the substrate. |
