Independently tunable triple-band infrared perfect absorber based on the square loops-shaped nano-silver structure

doi:10.1016/j.physe.2021.115122

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	Independently tunable triple-band infrared perfect absorber based on the square loops-shaped nano-silver structure
	Yi, Yingting 1; Yi, Zao 2; Zhao, Fei 2; Yang, Hua 3; Li, Mingjun 1; Wu, Biao 1; Gao, Enduo 1; Yi, Yougeng 1; Long, Mengqiu 1
刊名	PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
	2022-05-01
卷号	139
关键词	Metal-dielectric-metal structure (MIM) Triple-band perfect absorber (TBPA) Square loops Fabry-pe ' rot resonance Localized surface plasmon polaritons resonance Electromagnetic coupling effect
ISSN号	1386-9477
DOI	10.1016/j.physe.2021.115122
英文摘要	Recently, the keen demand for multi-band perfect absorbers in spectroscopy, infrared detection, and other fields has intensified. To meet the energy demand, here we propose an Ag-Dielectric-Ag multilayer triple-band perfect absorber exhibiting perfectly resonance absorption in the near-infrared region. And the numerical calculations indicate that we obtain three resonance absorption peaks (908 nm, 1085 nm, and 1216 nm) with the maximal absorption of 99.09%, 99.84%, and 99.21%, respectively. Based on this, we propose that the physical formation mechanism of three resonance peaks are the Fabry-Perot resonance effect and Localized surface plasmon polaritons resonance. Theoretically combined with the electromagnetic coupling theory to explain how the resonance-enhanced absorption. At the same time, by the comparison with the complementary structure, it is theoretically proposed that the MIM structure has a Fabry-Perot resonance effect in the near-infrared region and then computationally verified the Fabry-Perot formula. Furthermore, we can adjust the amplitude and wavelength of resonance peaks by modifying the geometry unit cell. And our proposed triple-band perfect absorber has some excellent properties, such as high absorptivity, multi-band, tunable, suitability for wide incidence angles, excellent angle tolerance, polarization tolerance, etc. In addition, our TBPA has a simple structure, which simplifies the processing technology and economically saves processing costs. Furthermore, the following simulations investigate the absorption spectrum of our TBPA exhibit property changes significantly as the environment changes. So we can calculate the sensitivity of three modes (sorted by resonance wavelength from short to long) is S1 = 70.09 nm/RIU, S2 = 208.26 nm/RIU, and S3 = 50.06 nm/RIU, respectively. Therefore, we believe that this triple-band perfect absorber can capture maximize optical energy and apply it in devices and materials for light conversions, like plasmon-enhanced photovoltaics, optical absorption switching, and modulator-optical communications.
WOS研究方向	Science & Technology - Other Topics ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000779141900004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158684]
专题	理学院
作者单位	1.Cent South Univ, Coll Phys & Elect, Changsha 410083, Peoples R China; 2.Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621010, Sichuan, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Yi, Yingting,Yi, Zao,Zhao, Fei,et al. Independently tunable triple-band infrared perfect absorber based on the square loops-shaped nano-silver structure[J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,2022,139.
APA	Yi, Yingting.,Yi, Zao.,Zhao, Fei.,Yang, Hua.,Li, Mingjun.,...&Long, Mengqiu.(2022).Independently tunable triple-band infrared perfect absorber based on the square loops-shaped nano-silver structure.PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,139.
MLA	Yi, Yingting,et al."Independently tunable triple-band infrared perfect absorber based on the square loops-shaped nano-silver structure".PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 139(2022).