Research and Fabrication of Chromium Carbide Solar Heat Selective Absorbers

• Main Authors: Jing-Yu Su, 蘇靖宇
• Other Authors: Fu-Der Lai
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/12801653122376022896

碩士 === 國立高雄第一科技大學 === 光電工程研究所 === 99 === In this study, Chromium Carbide (CrC) is used as solar heat selective absorbers, and decided that the film structure is SiO2 /CrC deposited on stainless steel substrate and the silicon substrate. Using our own sputter and the closed field unbalanced magnetron sputter, we fabricated the solar selective absorbers. And this thesis uses the UV-VIS-NIR Spectrophotometer to measure the reflectance spectrum of the sample to caculate the photothemal conversion efficiency. By using the recipe of Ar/C2H2=45/15, we fabricated the CrC solar heat selective absorber film and its best photothemal conversion efficiency is 81.91％. After depositing an anti-reflection layer consisted of 100nm SiO2 on CrC film, we fabricated the SiO2/CrC solar heat selective absorber film and its best photothemal conversion efficiency is up to 95.39%. In this study, we also used the Field-Emission Scanning Electron Microscope (FESEM), X-ray thin film diffraction (XRD) and Raman Spectrometer to measure the surface morphology and crystal analysis of the solar selective absorbers.