Room Temperature Fabry–Pérot Modes Microcavity Exciton–Polariton in CdS/CdS:SnS2 Superlattice Microwires
Source abstract
Abstract
Achieving room-temperature exciton–polariton condensation represents a frontier challenge in condensed matter physics and optoelectronics. However, its mainstream approach—distributed Bragg reflector (DBR) microcavities—faces widespread application challenges due to complex fabrication and high costs. Here, we report direct observation of the interaction between exciton and microcavity photons in Sn-doped CdS microsheet without extreme fabrication conditions. In situ PL and Raman mapping demonstrate the formation of superlattice structure. Using angle-resolved photoluminescence (ARPL) spectroscopy, we obtain Rabi splitting of polaritons up to 140 meV, and the exciton-like and photon-like components in low-polariton states at different cavity–exciton detuning were revealed at room temperature. Our work demonstrates the origin of optical microcavities and the light–matter coupling in CdS/CdS:SnS2 superlattice microwires.
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Research context
OpenAlex topics: Strong Light-Matter Interactions · Perovskite Materials and Applications · Thermal Radiation and Cooling Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Semiconductor and Physics, North University of China, Taiyuan 030051, China
School of Data Science and Technology, North University of China, Taiyuan 030051, China
Funding
National Natural Science Foundation of China · Postdoctoral Fellowship Program of CPSF · Shanxi Province Basic Research Program · Open Project Program of Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems · Fundamental Research Program of Shanxi Province
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