A NEW SOLAR SELECTIVE ABSORBING STRUCTURE OF FLEXIBLE Al-Al₂O₃ CERMET COMPOSITE COATINGS

We have studied the preparation of the flexible Al-AI₂O₃ cermet composite coatings deposited on the flexible kapton（PI）substrate prodUced by pulsed direct current（DC）magnetron spurtcring technique.From Kapton substrate to surtfaace,the complex coaings comprise an infrared reflective（IR）layer of AI,all interference absorptive layer of a graded AI-AI₂O₃ cermet,and an anti-reflective（AR）layer,of AI₂O₃.For these initial results of calculationst,he newsolar absorbing structure of flexible AI-AI₂O₃ cermet coatings was found to have the highest photo-thermal conversion efficiency.