Polarization-insensitive dielectric metamaterial absorber for near-unity UV-light trapping in monolayer graphene

doi:10.1016/j.optcom.2021.127459

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	Polarization-insensitive dielectric metamaterial absorber for near-unity UV-light trapping in monolayer graphene
	Y. N. Xie; X. Y. Liu; Y. J. Cai and J. F. Zhu
	2022
Source Publication	Optics Communications
ISSN	0030-4018
Volume	503 Pages:5
Abstract	With the aim of improving UV light trapping capability in monolayer graphene, a nanomesh metamaterial absorber is proposed, which exhibits the polarization-insensitive feature due to the geometrical symmetry. Through the functional combination of magnetic resonance and UV mirror, the absorption of unpolarized UV light in monolayer graphene can reach 99.5% under normal incidence. The absorption enhancement is induced by the magnetic resonance mode between the dielectric silica nanomesh and the calcium fluoride base layer. The effects of geometric parameters on the absorption spectra are systematically investigated. The proposed structure shows insensitive to manufacturing deviations, which can maintain at a high UV absorption rate of more than 99% within the nanomesh width ranging from 50 nm to 90 nm. Furthermore, after delicate optimization of the geometric parameters, two sharp resonances with absorbance more than 90% can be excited simultaneously inside the absorber. Our work provides an important theoretical guide for the design of optoelectronic devices based on two-dimensional materials in the UV range.
DOI	10.1016/j.optcom.2021.127459
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Indexed By	SCI
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Document Type	期刊论文
Identifier	http://ir.ciomp.ac.cn/handle/181722/65541
Collection	中国科学院长春光学精密机械与物理研究所
Recommended Citation GB/T 7714	Y. N. Xie,X. Y. Liu,Y. J. Cai and J. F. Zhu. Polarization-insensitive dielectric metamaterial absorber for near-unity UV-light trapping in monolayer graphene[J]. Optics Communications,2022,503:5.
APA	Y. N. Xie,X. Y. Liu,&Y. J. Cai and J. F. Zhu.(2022).Polarization-insensitive dielectric metamaterial absorber for near-unity UV-light trapping in monolayer graphene.Optics Communications,503,5.
MLA	Y. N. Xie,et al."Polarization-insensitive dielectric metamaterial absorber for near-unity UV-light trapping in monolayer graphene".Optics Communications 503(2022):5.

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中国科学院长春光学精密机械与物理研究所