AZO超表面结构的热辐射特性研究  

Study on the Thermal Radiation Property of AZO Metasurface Structure

作　　者：陈帅朋 赵亚丽 李旭峰[1] 彭伟 CHEN Shuai-peng;ZHAO Ya-li;LI Xu-feng;PENG Wei(School of Applied Science,Taiyuan University of Science and Technology,Taiyuan 030024;Department of Materials Science and Engineering,Jinzhong University,Jinzhong Shanxi 030619,China;Dalian University of Technology,College of Physics,Dalian Liaoning 116000,China)

机构地区：[1]太原科技大学应用科学学院,太原030024 [2]晋中学院材料科学与工程系,山西晋中030619 [3]大连理工大学物理学院,辽宁大连116000

出　　处：《太原科技大学学报》2025年第1期58-63,70,共7页Journal of Taiyuan University of Science and Technology

基　　金：国家自然科学基金(62105131);太原科技大学研究生联合培养示范基地项目(JD2022007);晋中市科技重点研发项目(Y201027)。

摘　　要：光学太阳反射镜(Optical solar reflecor OSR)是用于卫星的一种热控涂层,兼具太阳能光谱高反射和高热发射性能。该文设计了一种由掺铝氧化锌(AZO)超表面、介质层和反射层构建的光学太阳反射镜。采用时域有限差分法(Finite difference time domainmethod FDTD)对AZO超表面结构单元长度、周期、厚度及介质层厚度对OSR的太阳光谱反射及中红外热发射(吸收)性能影响进行计算分析,通过研究OSR结构参数对局域表面等离子激元谐振的影响,建立了局域表面等离激元宽频红外增强吸收结构模型。研究结果表明:金属反射层采用Ag,AZO超表面结构单元长度为1.1μm,厚度为0.04μm,周期d为1.3μm,SiO_(2)介质厚度为1.4μm时,OSR达到最佳吸收性能结构。该论文设计的OSR模型在(2.5~20)μm内有两个达到99%的吸收峰,在(5.0~8.3)μm及(10.2~15.9)μm范围内吸收率大于80%,为OSR在宽频吸收的基础上进一步提高吸收率提供了新思路。Optical solar reflector(OSR)is a thermal control coating for satellites with high solar spectrum reflection and high thermal emission properties.Accordingly,an optical solar reflector composed of an aluminum-doped zinc oxide(AZO)metasurface,a dielectric layer and a reflective layer was designed in this paper.FDTD was used to calculate and analyze the effects of length,period,thickness of AZO metasurface structure and the thickness of dielectric layer on the solar spectrum reflection and mid-infrared thermal emission(absorption)performance of OSR.According to the result of a study on the effects of OSR structure parameters on the resonance of local plasmon,a structural model of enhancing absorption by local plasmon with broadband infrared was constructed.The results show that the metallic reflective layer is made of Ag,and the OSR achieves the best absorption performance structure when the length of the AZO hypersurface structural unit is 1.1μm,the thickness is 0.04μm,the period d is 1.3μm,and the thickness of the SiO_(2) medium is 1.4μm.The OSR model designed in this paper has two absorption peaks in the range of(2.5~20)μm,with an absorption rate of 99%.In the range of(5.0~8.3)μm and(10.2~15.9)μm,the absorption rate is greater than 80%.The results provide a new idea for further improving the absorption rate of OSR on the basis of broadband absorption.

关 键 词：超表面 红外辐射 局域表面等离子激元 太阳光谱反射 OSR模型 

分 类 号：O436[机械工程—光学工程]