期刊
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
卷 139, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physe.2022.115140
关键词
Metamaterial; Metasurface; Perfect absorber; Localized surface plasmon resonance
资金
- Natural Science Foundation of Basic and Applied Foundation of Guangdong Province [2021A1515012217]
- National Key Research and Development Program of China [2019YFA0705004]
- National Natural Science Foundation of China [11690031]
- State Key Laboratory of Optoelectronic Materials and Technologies of Sun Yat-Sen University
In this study, a highly efficient broadband visible perfect absorber using plasmonic metasurface is designed and demonstrated. By changing the geometrical parameters, the electromagnetic properties of the absorber are discussed, and excellent absorption performance in the visible spectrum is revealed. The absorber shows great potential in thermal photovoltaics and energy harvesting applications.
Solar radiation is mainly concentrated in the visible and infrared spectra ranges, and its perfect absorption has great significance to solar cell, energy harvester, emitter, perfect stealth, and hot-electron device fields. In this study, we theoretically design and numerically demonstrate a highly efficient broadband visible perfect absorber (VPA) using plasmonic metasurface, which consists of quadrilateral truncated cones configuration. The electromagnetic properties of VPA are discussed by changing the geometrical parameters, especially to the absorption intensity of VPA. VPA processes perfect absorption (100%) at the wavelength of 490 nm and the minimum absorption is 99.51% at the wavelength of 772 nm. The averaged absorption is 99.91% spanned the whole visible spectrum. The excellent absorption performance is revealed by the Fabry-Perot resonance, localized surface plasmon resonance (SPR), and propagating SPR. VPA exhibits ultrahigh absorption, wide incident angle, and polarization-independent characteristics. It proves that the designed VPA has great potential in thermal photovoltaics and energy harvesting applications.
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