Observation of electrically generated polaron-polaritons in a monolayer MoSe₂ microcavity.

Authors

Yuanjun Guan, Mengyao Xu, Zhen Cui, Xingzhou Chen, Chengye Ding, Xiaoqing Zhou, Kenji Watanabe, Takashi Taniguchi, Jesper Levinsen, Meera M Parish, Pavlos G Savvidis, Zhe-Yu Shi, Zheng Sun, Jian Wu

Published in

Science advances. Volume 12. Issue 41. Pages eaed2180. Oct 09, 2026. Epub Oct 09, 2026.

Abstract

Quasiparticles arising from the interaction between mobile impurities and a quantum many-body environment-known as polarons-play a pivotal role in shaping the optical and electronic properties of low-dimensional systems. Here, we report the direct observation of electrically generated polaron-polaritons within a monolayer molybdenum diselenide microcavity. By embedding the monolayer in a planar optical cavity, we achieve strong coupling between exciton-polarons and cavity photons, creating an electrically driven light-emitting diode based on polaron-polaritons. The device exhibits an external quantum efficiency of ∼0.15%, representing a 10-fold enhancement over prior exciton-polariton devices based on monolayer tungsten disulfide. This demonstration establishes a versatile platform for inversionless laser technology and for polariton-based quantum optoelectronics while offering insights into radiative many-body physics in two-dimensional semiconductors.

PMID:
42853946
Bibliographic data and abstract were imported from PubMed on 10 Oct 2026.

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