红外与毫米波学报2021，Vol.40Issue(2)：150-155,6.DOI:10.11972/j.issn.1001-9014.2021.02.002
基于W-SiO2双金属陶瓷结构的高效率太阳能选择性吸收薄膜的优化和制备
Optimization and preparation of the high-efficiency solar selective absorber based on double W-SiO2 cermet layers
摘要
Abstract
To improve optical absorbance in the solar spectrum region as well as to reduce solar emittance in theinfrared region,a new solar absorber structure based on the double W-SiO2 cermet layers was proposed and opti-mized. The factors which affect the spectral selectivity of the solar absorber such as the IR reflectance property of metal,and the volume fraction of the absorption layer were investigated. A series of W-SiO2 cermet films with different values of volume fraction were prepared onto Si and K9 glass substrates. The measured optical constants as well as those deduced from the data fitting were used to optimize performance of the selective solar absorber. Based on the optimized parameters,the solar absorber structure with the layer parameter,consisting of that W(～150 nm)/ W-SiO2(94 nm,0. 67HVF)/ W-SiO2(34 nm,0. 27LVF)/ SiO2(47 nm),was fabricated using a magnetron sputtering system at room temperature. The experimental results agree well with the simulated ones, showing an average optical absorption of 95. 3％ in the wavelength region of 250～1500 nm,and a low thermal emittance of about 0. 124 at 600 K in the broad wavelength region of 0. 25～25 μm. Due to the simple components and high efficiency,the solar selective absorber based on the structures consisting of double W-SiO2 cermet layers shows a good potential for practical applications in the future.关键词
太阳能选择性吸收薄膜/W-SiO2金属陶瓷/高太阳能吸收率/低热辐射率Key words
solar selective absorber/W-SiO2 cermet layer/high solar absorbance/low thermal emittance分类
数理科学引用本文复制引用
徐磊,陈良尧,胡二涛,涂华恬,任文帅,贺蓉,王松有,赵海斌,张荣君,郑玉祥..基于W-SiO2双金属陶瓷结构的高效率太阳能选择性吸收薄膜的优化和制备[J].红外与毫米波学报,2021,40(2):150-155,6.基金项目
Supported by National Natural Science Foundation of China(61427815) （61427815）
