Jia Yang, Wu Tong, Wang Guan, Jiang Jijuan, Miao Fengjuan, Gao Yachen
Department of Optoelectronic Information, Electronic Engineering College, Heilongjiang University, Harbin 150080, China.
College of Communication and Electronic Engineering, Qiqihar University, Qiqihar 161000, China.
Nanomaterials (Basel). 2022 Aug 11;12(16):2753. doi: 10.3390/nano12162753.
A high absorption broadband absorber based on MXene and tungsten nanospheres in visible and near-infrared bands is proposed. The absorber has a maximum absorption of 100% and an average absorption of 95% in the wavelength range of 400-2500 nm. The theoretical mechanism and parameter adjustability of the absorber are analyzed by FDTD solutions. The results show that the structural parameters can effectively adjust the absorption performance. The good absorption performance is due to the action of the local surface plasmon resonance coupling with the gap surface plasmon resonance and Fabry-Perot resonance. The simulation results show that the absorber is insensitive to the polarization and oblique incidence angle of incident light, and that high absorption and broadband can be maintained when the oblique incidence angle is up to 60°.
提出了一种基于MXene和钨纳米球的可见和近红外波段高吸收宽带吸收体。该吸收体在400-2500nm波长范围内最大吸收率为100%，平均吸收率为95%。通过FDTD解决方案分析了吸收体的理论机制和参数可调性。结果表明，结构参数可有效调节吸收性能。良好的吸收性能归因于局部表面等离子体共振与间隙表面等离子体共振以及法布里-珀罗共振的耦合作用。模拟结果表明，该吸收体对入射光的偏振和斜入射角不敏感，当斜入射角高达60°时仍可保持高吸收和宽带特性。
