Exciton–polaritons of hBN/WS2 heterostructure in cavity observed at room temperature
| Autor: | Xinchao Zhao, Zhuangzhuang Cui, Anping Ge, Xinle Lu, Xueyu Guan, Jian Zhang, Honglou Zhen, Liaoxin Sun, Shaowei Wang, Wei Lu |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Applied Physics Letters. 121:231106 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0118834 |
| Popis: | The layer-by-layer buildup of a two-dimensional transition metal dichalcogenide monolayer to form a stack is an important development for these materials, which performs many remarkable properties in the light–matter interaction. Herein, we find clear evidence of exciton–polaritons emerging from WS2/hBN/WS2 heterostructures embedded in a dielectric microcavity under optical pumping. A large Rabi splitting of 15 meV is observed at room temperature, which increases to 25 meV at 5 K. An all-dielectric Fabry–Pérot microcavity provides a simple but effective way to study the room temperature strong coupling between cavity photons and excitons. Our results pave the way for room-temperature polaritonic devices based on quantum-well van der Waals heterostructures. |
| Databáze: | OpenAIRE |
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