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8. Nanocavity-induced trion emission from atomically thin WSe2.

Author

Wang, Zhuo, Liu, Yuanda, Chen, Dao, Wang, Zixuan, Asbahi, Mohamed, Rezaei, Soroosh Daqiqeh, Deng, Jie, Teng, Jinghua, Wee, Andrew T. S., Zhang, Wenjing, Yang, Joel K. W., and Dong, Zhaogang

Subjects
GOLD films, OPTOELECTRONIC devices, ELECTRON pairs, EXCITON theory, QUASIPARTICLES, HOT carriers, PHOTODETECTORS, INFORMATION processing
Abstract

Exciton is a bosonic quasiparticle consisting of a pair of electron and hole, with promising potentials for optoelectronic device applications, such as exciton transistors, photodetectors and light emitting devices. However, the charge-neutral nature of excitons renders them challenging to manipulate using electronics. Here we present the generation of trions, a form of charged excitons, together with enhanced exciton resonance in monolayer WSe2. The excitation of the trion quasiparticles is achieved by the hot carrier transport from the integrated gold plasmonic nanocavity, formed by embedding monolayer WSe2 between gold nanoparticles and a gold film. The nanocavity-induced negatively charged trions provide a promising route for the manipulation of excitons, essential for the construction of all-exciton information processing circuits. [ABSTRACT FROM AUTHOR]

Published
2022
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10. Nanocavity-induced trion emission from atomically thin WSe2.

Author

Wang, Zhuo, Liu, Yuanda, Chen, Dao, Wang, Zixuan, Asbahi, Mohamed, Rezaei, Soroosh Daqiqeh, Deng, Jie, Teng, Jinghua, Wee, Andrew T. S., Zhang, Wenjing, Yang, Joel K. W., and Dong, Zhaogang

Subjects
*GOLD films, *OPTOELECTRONIC devices, *ELECTRON pairs, *EXCITON theory, *QUASIPARTICLES, *HOT carriers, *PHOTODETECTORS, *INFORMATION processing
Abstract

Exciton is a bosonic quasiparticle consisting of a pair of electron and hole, with promising potentials for optoelectronic device applications, such as exciton transistors, photodetectors and light emitting devices. However, the charge-neutral nature of excitons renders them challenging to manipulate using electronics. Here we present the generation of trions, a form of charged excitons, together with enhanced exciton resonance in monolayer WSe2. The excitation of the trion quasiparticles is achieved by the hot carrier transport from the integrated gold plasmonic nanocavity, formed by embedding monolayer WSe2 between gold nanoparticles and a gold film. The nanocavity-induced negatively charged trions provide a promising route for the manipulation of excitons, essential for the construction of all-exciton information processing circuits. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

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