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Special Issue:
TOPICAL REVIEW — Exciton physics: Fundamentals, materials and devices
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| SPECIAL TOPIC — Exciton physics: Fundamentals, materials and devices |
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Room-temperature exciton-polariton condensation in pressed perovskite microcavities |
| Tianyin Zhu(朱天寅)1, Zelei Chen(陈泽磊)1, Xiaoyu Wang(王小宇)1, Zhongmin Huang(黄钟民)1, Haibin Zhao(赵海斌)1,2, and Jun Wang(王俊)1,2,† |
1 Key Laboratory of Micro & Nano Photonic Structures, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China;
2 State Key Laboratory of Photovoltaic Science and Technology, Shanghai Key Laboratory of Metasurfaces for Light Manipulation, Shanghai Engineering Research Centre of Ultra Precision Optical Manufacturing, Fudan University, Shanghai 200433, China |
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Abstract Microcavity exciton-polaritons, formed by strong light-matter coupling, are essential for realizing Bose-Einstein condensation and low-threshold lasing. Such polaritonic lasing and condensation have been demonstrated in III-V semiconductors at liquid helium temperatures. However, the complex fabrication of these microcavities and operating temperatures limit their room-temperature practical application. Here, we experimentally realize room-temperature exciton-polariton condensation and polaritonic lasing in a CsPbBr$_{3}$ perovskite planar microcavity fabricated by the pressing process. Angle-resolved photoluminescence spectra demonstrate the strong light-matter coupling and the formation of exciton-polaritons in such a pressed microcavity. Above the critical threshold, mass polaritons accumulating at the bottom of dispersion lead to a narrow emission linewidth and pronounced blueshift, further reinforcing the Bose-Einstein condensation and polaritonic lasing in this system. Our results offer a feasible and effective approach to investigate exciton-polariton condensation and polariton lasing at room temperature.
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Received: 07 April 2025
Revised: 26 May 2025
Accepted manuscript online: 27 May 2025
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PACS:
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42.50.Pq
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(Cavity quantum electrodynamics; micromasers)
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71.36.+c
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(Polaritons (including photon-phonon and photon-magnon interactions))
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42.55.Sa
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(Microcavity and microdisk lasers)
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| Fund: The authors gratefully acknowledge the support from the National Natural Science Foundation (Grant No. 12204111), the National Key Research and Development Program of China (Grant No. 2023YFA1407100), and Shanghai Pilot Program for Basic Research (Grant No. 22JC1403202). |
Corresponding Authors:
Jun Wang
E-mail: wangjunfd@fudan.edu.cn
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Cite this article:
Tianyin Zhu(朱天寅), Zelei Chen(陈泽磊), Xiaoyu Wang(王小宇), Zhongmin Huang(黄钟民), Haibin Zhao(赵海斌), and Jun Wang(王俊) Room-temperature exciton-polariton condensation in pressed perovskite microcavities 2025 Chin. Phys. B 34 094202
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