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Routing the Exciton Emissions of WS(2) Monolayer with the High-Order Plasmon Modes of Ag Nanorods

[Image: see text] Locally routing the exciton emissions in two-dimensional (2D) transition-metal dichalcogenides along different directions at the nanophotonic interface is of great interest in exploiting the promising 2D excitonic systems for functional nano-optical components. However, such contro...

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Detalles Bibliográficos
Autores principales: Li, Shasha, Ai, Ruoqi, Chui, Ka Kit, Fang, Yini, Lai, Yunhe, Zhuo, Xiaolu, Shao, Lei, Wang, Jianfang, Lin, Hai-Qing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10214448/
https://www.ncbi.nlm.nih.gov/pubmed/37158482
http://dx.doi.org/10.1021/acs.nanolett.3c00054
Descripción
Sumario:[Image: see text] Locally routing the exciton emissions in two-dimensional (2D) transition-metal dichalcogenides along different directions at the nanophotonic interface is of great interest in exploiting the promising 2D excitonic systems for functional nano-optical components. However, such control has remained elusive. Herein we report on a facile plasmonic approach for electrically controlled spatial modulation of the exciton emissions in a WS(2) monolayer. The emission routing is enabled by the resonance coupling between the WS(2) excitons and the multipole plasmon modes in individual silver nanorods placed on a WS(2) monolayer. Different from prior demonstrations, the routing effect can be modulated by the doping level of the WS(2) monolayer, enabling electrical control. Our work takes advantage of the high-quality plasmon modes supported by simple rod-shaped metal nanocrystals for the angularly resolved manipulation of 2D exciton emissions. Active control is achieved, which offers great opportunities for the development of nanoscale light sources and nanophotonic devices.