Research on materials of solar selective absorption coating based on the first principle

Abstract Based on the first principle, this paper studies optical properties of Ni, Mo, CoO, and Cr 2 O 3 according to Materials Studio software. It is found that absorptivity Ni low, while has low emissivity. Hence, it can be used reduce The absorption rate CoO very high. Therefore, are suitable composed make a solar selective coating with high mass ratio greater impact composite material, so absorption–emission ratios material Ni–CoO at different calculated. highest when 1:1, performance best, which in good agreement result experiment. And we hope our method will provide some help for study coatings.