Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures

Atomically thin, two-dimensional, transition-metal dichalcogenide (TMD) monolayers have recently emerged as a versatile platform for optoelectronics. Their appeal stems from a tunable direct bandgap in the visible and near-infrared regions, the ability to enable strong coupling to light, and the uni...

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Main Authors: Cotrufo Michele, Sun Liuyang, Choi Junho, Alù Andrea, Li Xiaoqin
Format: Article
Language:English
Published: De Gruyter 2019-03-01
Series:Nanophotonics
Subjects:
Online Access:https://doi.org/10.1515/nanoph-2018-0185
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author Cotrufo Michele
Sun Liuyang
Choi Junho
Alù Andrea
Li Xiaoqin
author_facet Cotrufo Michele
Sun Liuyang
Choi Junho
Alù Andrea
Li Xiaoqin
author_sort Cotrufo Michele
collection DOAJ
description Atomically thin, two-dimensional, transition-metal dichalcogenide (TMD) monolayers have recently emerged as a versatile platform for optoelectronics. Their appeal stems from a tunable direct bandgap in the visible and near-infrared regions, the ability to enable strong coupling to light, and the unique opportunity to address the valley degree of freedom over atomically thin layers. Additionally, monolayer TMDs can host defect-bound localized excitons that behave as single-photon emitters, opening exciting avenues for highly integrated 2D quantum photonic circuitry. By introducing plasmonic nanostructures and metasurfaces, one may effectively enhance light harvesting, direct valley-polarized emission, and route valley index. This review article focuses on these critical aspects to develop integrated photonic and valleytronic applications by exploiting exciton–plasmon coupling over a new hybrid material platform.
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spelling doaj.art-e088043b222240a3a4ef13910945f09d2022-12-21T23:32:30ZengDe GruyterNanophotonics2192-86062192-86142019-03-018457759810.1515/nanoph-2018-0185nanoph-2018-0185Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructuresCotrufo Michele0Sun Liuyang1Choi Junho2Alù Andrea3Li Xiaoqin4Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USADepartment of Physics, Complex Quantum Systems, and Texas Materials Institutes, The University of Texas at Austin, Austin, TX 78712, USADepartment of Physics, Complex Quantum Systems, and Texas Materials Institutes, The University of Texas at Austin, Austin, TX 78712, USAPhotonics Initiative, Advanced Science Research Center, City University of New York, NY 10031, USADepartment of Physics, Complex Quantum Systems, and Texas Materials Institutes, The University of Texas at Austin, Austin, TX 78712, USAAtomically thin, two-dimensional, transition-metal dichalcogenide (TMD) monolayers have recently emerged as a versatile platform for optoelectronics. Their appeal stems from a tunable direct bandgap in the visible and near-infrared regions, the ability to enable strong coupling to light, and the unique opportunity to address the valley degree of freedom over atomically thin layers. Additionally, monolayer TMDs can host defect-bound localized excitons that behave as single-photon emitters, opening exciting avenues for highly integrated 2D quantum photonic circuitry. By introducing plasmonic nanostructures and metasurfaces, one may effectively enhance light harvesting, direct valley-polarized emission, and route valley index. This review article focuses on these critical aspects to develop integrated photonic and valleytronic applications by exploiting exciton–plasmon coupling over a new hybrid material platform.https://doi.org/10.1515/nanoph-2018-0185exciton–plasmon couplingmetasurfacesingle-photon emissiontmdvalley polarization
spellingShingle Cotrufo Michele
Sun Liuyang
Choi Junho
Alù Andrea
Li Xiaoqin
Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
Nanophotonics
exciton–plasmon coupling
metasurface
single-photon emission
tmd
valley polarization
title Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
title_full Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
title_fullStr Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
title_full_unstemmed Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
title_short Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
title_sort enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures
topic exciton–plasmon coupling
metasurface
single-photon emission
tmd
valley polarization
url https://doi.org/10.1515/nanoph-2018-0185
work_keys_str_mv AT cotrufomichele enhancingfunctionalitiesofatomicallythinsemiconductorswithplasmonicnanostructures
AT sunliuyang enhancingfunctionalitiesofatomicallythinsemiconductorswithplasmonicnanostructures
AT choijunho enhancingfunctionalitiesofatomicallythinsemiconductorswithplasmonicnanostructures
AT aluandrea enhancingfunctionalitiesofatomicallythinsemiconductorswithplasmonicnanostructures
AT lixiaoqin enhancingfunctionalitiesofatomicallythinsemiconductorswithplasmonicnanostructures