Enhanced Light Emission from Monolayer MoS<sub>2</sub> by Doubly Resonant Spherical Si Nanoantennas
Enhanced Light Emission from Monolayer MoS<sub>2</sub> by Doubly Resonant Spherical Si Nanoantennas
复制标题
双谐振球形硅纳米天线增强单层 MoS<sub>2</sub> 的光发射
DOI:
10.1021/acsphotonics.2c00142
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发表时间:
2022
期刊:
影响因子:
7
通讯作者:
Fujii Minoru
中科院分区:
文献类型:
--
作者:
Shinomiya Hiroto;Sugimoto Hiroshi;Hinamoto Tatsuki;Lee Yan Joe;Brongersma Mark L.;Fujii Minoru
Optical antennas provide a powerful tool to control local photonic environments and enhance light emission from two-dimensional transition-metal dichalcogenides. Dielectric nanoantennas with multipolar Mie resonances bring unique advantages for achieving simultaneous enhancement of the absorption and emission processes. Here, we achieve a strong modification of the photoluminescence (PL) behavior of monolayer MoS2by a spherical nanoparticle (NP) of crystalline silicon (Si) that works as a double resonance nanoantenna. From theoretical calculations for in-plane dipoles placed beneath a Si NP nanoantenna with different sizes, we explore optimal conditions for the double resonances. Then, we develop a heterostructure composed of a Si NP and a monolayer MoS2sheet with a comparable diameter and investigate the scattering, PL, and PL excitation spectra across a wide Si NP size range. We show that the spectral shape is significantly modified and PL intensity is enhanced up to ∼10-fold due to the coupling of the excitation process to the magnetic quadrupole resonance and the emission process to the magnetic dipole resonance.
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影响因子:
7
作者:
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通讯作者:
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影响因子:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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