基于四角星阵列的超宽带超材料完美吸收体的数值研究

Numerical Study of Ultra-Broadband Metamaterial Perfect Absorber Based on Four-Corner Star Array.

作者信息

Cheng Yu, Xiong Min, Chen Ming, Deng Shijie, Liu Houquan, Teng Chuanxin, Yang Hongyan, Deng Hongchang, Yuan Libo

机构信息

Guangxi Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China.

出版信息

Nanomaterials (Basel). 2021 Aug 25;11(9):2172. doi: 10.3390/nano11092172.

DOI:10.3390/nano11092172

PMID:34578488

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8468621/

Abstract

In recent years, research on solar absorbers provides a significant breakthrough to solve the energy crisis. A perfect solar absorber based on a four-corner star array is designed and the absorption performance is analyzed numerically. The results show that the absorber reaches more than 90% of the full band in the range of 400-2000 nm. In particular, the absorption efficiency of the continuous more than 95% of the bandwidth reached 1391 nm, and the average absorption efficiency of the whole study band is more than 98%, and the loss of the solar spectrum only accounted for 2.7%. At the same time, the absorption efficiency can be adjusted by changing the geometric structure of the absorber. In addition, due to the perfect symmetry of the structure, it has an excellent insensitivity of the incident angle and polarization angle. In general, the proposed solar absorber has exciting prospects in solar energy collection and utilization, photothermal conversion and other related fields.

摘要

近年来，对太阳能吸收器的研究为解决能源危机带来了重大突破。设计了一种基于四角星阵列的完美太阳能吸收器，并对其吸收性能进行了数值分析。结果表明，该吸收器在400 - 2000 nm范围内全波段吸收率超过90%。特别是，连续超过95%带宽的吸收效率达到1391 nm，整个研究波段的平均吸收效率超过98%，太阳光谱损失仅占2.7%。同时，通过改变吸收器的几何结构可以调节吸收效率。此外，由于结构具有完美的对称性，它对入射角和偏振角具有出色的不敏感性。总体而言，所提出的太阳能吸收器在太阳能收集与利用、光热转换等相关领域具有令人兴奋的前景。