基于W双十字形微结构的太阳能选择性吸收薄膜的数值研究（英文）  

Numerical study of a tungsten twin-cross-grating-based solar selective absorber

作　　者：张静如 涂华恬 臧恺岩 胡二涛 张荣君[1] 郑玉祥[1] 王松有[1] 赵海斌[1] 杨月梅[1] 陈良尧[1] ZHANG Jing-Ru;TU Hua-Tian;ZANG Kai-Yan;HU Er-Tao;ZHANG Rong-Jun;ZHENG Yu-Xiang;WANG Song-You;ZHAO Hai-Bin;YANG Yue-Mei;CHEN Liang-Yao(Department of Optical Science and Engineering,Fudan University,Shanghai,200433,China;College of Electronic and Optical Engineering & College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]复旦大学光科系与工程系,上海200433 [2]南京邮电大学电子与光学工程学院&微电子学院,江苏南京210023

出　　处：《红外与毫米波学报》2019年第5期566-571,共6页Journal of Infrared and Millimeter Waves

基　　金：Supported by National Natural Science Foundation of China(61427815)

摘　　要：提出一种基于金属-介质六层膜的高太阳辐射吸收的新型双十字形微结构,计算显示其加权平均吸收率在截止波长前的光谱区约为96.5%,850 K温度的辐射率为0.086.通过场图分析对太阳能波段的光热吸收机制进行了探讨.不同入射角情况下的计算结果显示,基于双十字形微结构的太阳能选择性吸收薄膜可具有低偏振依赖性,以及小于50°入射角条件下的低入射角依赖性特点,将能够满足太阳能选择性吸收器件的应用需求.Based on the six-layered metal/dielectric film structure, a new 2D tungsten twin-cross-grating-based solar selective absorber (SSA) has been proposed to improve the optical absorption in the solar radiation region. The weighted average absorptivity before the cut-off wavelength is about 96.5%, and the calculated emissivity at 850 K is about 0.086. The mechanisms of high absorption in the solar region have been further analyzed by field intensity distribution in the SSA structure. The absorber also has the feature to be less polarization-dependent and broad angular-independent up to 50°, which satisfies the required conditions of the SSA device in applications.

关 键 词：太阳能选择性吸收薄膜 光子晶体吸收器 高吸收 低辐射 

分 类 号：O43[机械工程—光学工程]