Enhancing functionalities of atomically thin semiconductors with plasmonic nanostructures

Nanophotonics

article

Michele Cotrufo¹  Liuyang Sun³  Junho Choi³  Andrea Alù²  Xiaoqin Li³ 

[1] Department of Electrical and Computer Engineering, The University of Texas at Austin;Advanced Science Research Center, City University of New York;Department of Physics, Complex Quantum Systems, and Texas Materials Institutes, The University of Texas at Austin;Physics Program, Graduate Center, City University of New York;Department of Electrical Engineering, City College of The City University of New York

关键词: exciton–plasmon coupling;    metasurface;    single-photon emission;    TMD;    valley polarization;   

DOI  :  10.1515/nanoph-2018-0185

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

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.

【 授权许可】

CC BY