Planar metasurface‑based concentrators for solar energy harvest:from theory to engineering  

作　　者：Cheng Zhang Yujie Zhan Yongxue Qiu Leilei Xu Jianguo Guan 

机构地区：[1]Hubei Engineering Research Center of RF‑Microwave Technology and Application,School of Science,Wuhan University of Technology,Wuhan 430070,China [2]State Key Lab of Advanced Technology for Materials Synthesis and Processing,International School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China

出　　处：《PhotoniX》2022年第1期38-72,共35页智汇光学（英文）

基　　金：National Key Research and Development Program of China(2020YFA0710100);the National Natural Science Foundation of China(61731010);the Fundamental Research Funds for the Central Universities(WUT:2021IVA064);the Foundation from Guangxi Key Laboratory of Optoelectronic Information Processing(GD21203).

摘　　要：Solar energy is an inexhaustible renewable energy resource,which is a potential solution to global warming and aids sustainable development.The use of solar-thermal collectors to harness solar energy facilitates low-cost heat storage and can improve the stability of power grids based on renewable energy.In solar-thermal collectors,traditional concentrators,such as parabolic troughs and dishes,are typically used but inevitably require high-precise supports and complex tracking sun systems,which increase the cost of solar-thermal power stations and hinder their further applications.In contrast,planar meta-lenses(so-called metasurface-based concentrators)consisting of two-dimensional nanostructured arrays are allowed to engineer the frequency dispersion and angular dispersion of the incident light through delicately arranging the aperture phase distribution,thereby correcting their inherent aberrations.Accordingly,the novel meta-lenses offer tremendous potentials to effectively capture broadband,wide-angle sunlight without the extra tracking system.This review summarizes the research motivation,design principles,building materials,and large-area fabrication methods of meta-lens for solar energy harvesting in terms of focusing efficiency,operation bandwidth,and angular dependence.In addition,the main challenges and future goals are examined.

关 键 词：Solar-thermal collector Metasurface CONCENTRATOR Solar energy harvesting 

分 类 号：TK51[动力工程及工程热物理—热能工程]