材料科学
纳米光子学
吸收(声学)
纳米结构
等离子体子
时域有限差分法
纳米颗粒
表面等离子体子
光电子学
单层
光学
局域表面等离子体子
波长
纳米材料
纳米技术
物理
复合材料
作者
Kun Zhou,Jinlin Song,Lu Lu,Zixue Luo
出处
期刊:Optics Express
[The Optical Society]
日期:2019-01-25
卷期号:27 (3): 2305-2305
被引量:31
摘要
The light absorption of a hybrid novel MoS2-based nanostructure is theoretically investigated by using the finite-difference time-domain (FDTD) simulations, and high-efficiency broadband absorption is achieved in the visible wavelength region. The enhancement of localized electromagnetic field owing to that localized surface plasmon resonances (LSPRs) supported by Au nanoparticles (NPs) can be used to enhance the absorption of MoS2, and the localized absorption of monolayer MoS2 are remarkably enhanced up from about 18.3% and 4.6% to about 55.2% and 84.8% at the resonant wavelengths of 467.7 nm and 557.8 nm, respectively. Furthermore, the effects of radii of Au NPs, period of Au NPs array, Au@Si NPs core-shell ratios, period numbers of the distributed Bragg mirror (DBR), and incident angle on the absorption of the proposed nanostructure have been systematically investigated. The similar design idea to enhance the light-MoS2 interaction can also be applied to other transition-metal dichalcogenides (TMDCs). This work will contribute to the design of TMDCs-based nanophotonic and optoelectronic devices.
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