SOLAR ENERGY ABSORPTIVE COATING, ARRANGEMENT OF THE COATING ON A SUBSTRATE, METHOD FOR MANUFACTURING THE ARRANGEMENT AND USE OF THE ARRANGEMENT

摘要

This invention relates a solar energy absorptive coating for absorbing sunlight energy is, wherein the coating comprises a multilayer stack with following stacking sequence: At least one first absorbing layer for absorbing an absorption radiation of a certain spectrum of the sunlight; at least one transmission dielectric layer for a transmission of the absorption radiation; and at least one second absorbing layer for absorbing the absorption radiation; wherein at least one of the absorbing layer materials has an absorbing layer material refractive index na for the absorption radiation, which is selected from the range between 1.5 and 4.0, and an absorbing layer material extinction coefficient ka for the absorption radiation, which is selected from the range between 0.8 and 3.0; and the transmission dielectric layer material has a dielectric layer material refractive index nd for the absorption radiation, which is selected from the range between 1.0 and 3.0, and a dielectric layer material extinction coefficient kd for the absorption radiation, which is selected from the range between 0.0 and 0.2. The certain spectrum of the sunlight ranges from 350nm to 2500nm. Moreover a method for manufacturing the arrangement is provided. For an attaching the multilayer stack on the substrate surface of the substrate a thin film deposition, e.g. sputtering is used. The arrangement is used in a power plant for converting solar energy into electrical energy.