High-Temperature High Absorptance Thin Film Coating Based on Cermet Structure Solar Energy Absorber

  • 夏 丹俠

Student thesis: Master's Thesis


This study is aimed at the development of the high-temperature and high absorptance cermet-based multilayer thin film coating These absorbers are used in the concentrating solar power technologies for absorbing solar radiation at high temperature In the fabrication process firstly a metal layer which serves as an infrared reflector is coated on the stainless steel (SUS-304) substrate The cermet layer is made of aluminum nitride (AlN) and tungsten (W) and is coated with the metal layer by using the Co-sputtering process Semiconductor material layer like aluminum oxide (Al2O3) or Silicon nitride (Si3N4) is coated on the cermet layer which serves as an anti-reflection coating These multilayers are coated to achieve high absorptance and low thermal emittance These thicknesses of the layers are arranged in the table from 10nm to 100nm and simulated by using a commercial package COMSOL Multiphysics The optimal values of the thicknesses suggested by the simulation are utilized for the coating Experiments on measuring the absorptance and the emittance of the film coating are conducted and the results are compared to the simulation
Date of Award2016 Aug 3
Original languageEnglish
SupervisorChin-Hsiang Cheng (Supervisor)

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