Room-Temperature Exciton Polaritons in Monolayer WS2 Enabled by Plasmonic Bound States in the Continuum

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-03-05 DOI:10.1021/acs.nanolett.4c06464

Cai Luo, Wei Li, Jianmei Li, Ziyi Fu, Nannan Hu, Zhixiang Yu, Wenyao Chang, Pinxu Li, Xin Huang, Baoli Liu, Yang Yang, Aizi Jin, Baogang Quan, Shibing Tian, Haifang Yang, Yang Guo, Changzhi Gu

引用次数: 0

Abstract

Exciton polaritons formed by the strong coupling between excitons and photons have been extensively studied in transition metal disulfides (TMDs) for their potential to inherit ultralong radiation lifetime and remarkable nonlinearity. Many studies have achieved strong coupling at room temperature. However, the systems in these studies generally lack orderly characteristics and precise controllability, and their tunability also remains rather limited. Here, we demonstrate a plasmonic grating with a bound state in the continuum (BIC) as a highly tunable platform for generating exciton polaritons in monolayer WS₂ at room temperature. We characterized the polariton modes and determined an energy splitting of 93 meV. This validates strong coupling in our system. Our research offers a new approach for exploring exciton polaritons in 2D semiconductors, opening doors for room-temperature optoelectronic and quantum computing applications.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

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