材料科学
纳米柱
超材料吸收剂
光电子学
光学
全向天线
吸收(声学)
吸收率
波长
极化(电化学)
串联
超材料
物理
纳米技术
纳米结构
天线(收音机)
电信
反射率
可调谐超材料
计算机科学
物理化学
复合材料
化学
作者
Jing-Hao Wu,Yan-Long Meng,Yang Li,Yi Li,Yan-Song Li,Gui-Ming Pan,Juan Kang,Chun-Lian Zhan,Han Gao,Bo Hu,Shang-Zhong Jin
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-10-08
卷期号:12 (19): 3515-3515
摘要
In this study, we investigated an absorber based on a center-aligned tandem nanopillar array for ultra-broadband solar energy harvesting theoretically. A high-efficiency, omnidirectional absorber was obtained by introducing the center-aligned tandem nanopillar array embedded in an Al2O3 dielectric layer. The multi-coupling modes at different wavelengths were interpreted. The strong absorption can be adjusted by changing the radii and heights of nanopillars. According to the simulation results, the average absorptance of the absorber exceeded 94% in the wavelength range from 300 nm to 2000 nm. In addition, the high-efficiency absorption was insensitive to the incident angle and polarization state. The research not only proposed an absorber which possesses a huge potential value for application areas, such as thermal photovoltaic systems, infrared detection, and isotropic absorption sensors, but also pointed out a new way to design an absorber with high efficiency in an ultrabroad wavelength range.
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