Energy transfer driven brightening of MoS2 by ultrafast polariton relaxation in microcavity MoS2/hBN/WS2 heterostructures

Energy transfer is a ubiquitous phenomenon that delivers energy from a blue-shifted emitter to a red-shifted absorber, facilitating wide photonic applications. Two-dimensional (2D) semiconductors provide unique opportunities for exploring novel energy transfer mechanisms in the atomic-scale limit. H...

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Bibliographic Details
Published in:Nature communications 2024-02, Vol.15 (1), p.1747-1747, Article 1747
Main Authors: Hu, Zehua, Krisnanda, Tanjung, Fieramosca, Antonio, Zhao, Jiaxin, Sun, Qianlu, Chen, Yuzhong, Liu, Haiyun, Luo, Yuan, Su, Rui, Wang, Junyong, Watanabe, Kenji, Taniguchi, Takashi, Eda, Goki, Wang, Xiao Renshaw, Ghosh, Sanjib, Dini, Kevin, Sanvitto, Daniele, Liew, Timothy C. H., Xiong, Qihua
Format: Article
Language:English
Subjects:
140/125
639/624/400/2797
639/925/930/12
Brightening
Coupling
Emitters
Energy
Energy transfer
Excitons
Heterojunctions
Heterostructures
Humanities and Social Sciences
Light sources
Low dimensional semiconductors
Molybdenum disulfide
multidisciplinary
Phase diagrams
Photons
Polaritons
Science
Science (multidisciplinary)
Tungsten disulfide
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Summary:Energy transfer is a ubiquitous phenomenon that delivers energy from a blue-shifted emitter to a red-shifted absorber, facilitating wide photonic applications. Two-dimensional (2D) semiconductors provide unique opportunities for exploring novel energy transfer mechanisms in the atomic-scale limit. Herein, we have designed a planar optical microcavity-confined MoS 2 /hBN/WS 2 heterojunction, which realizes the strong coupling among donor exciton, acceptor exciton, and cavity photon mode. This configuration demonstrates an unconventional energy transfer via polariton relaxation, brightening MoS 2 with a record-high enhancement factor of ~440, i.e., two-order-of-magnitude higher than the data reported to date. The polariton relaxation features a short characteristic time of ~1.3 ps, resulting from the significantly enhanced intra- and inter-branch exciton-exciton scattering. The polariton relaxation dynamics is associated with Rabi energies in a phase diagram by combining experimental and theoretical results. This study opens a new direction of microcavity 2D semiconductor heterojunctions for high-brightness polaritonic light sources and ultrafast polariton carrier dynamics. Here, the authors design a microcavity-confined 2D heterojunction to realize the strong coupling among donor exciton, acceptor exciton, and cavity photon mode, leading to an unconventional energy transfer v ia polariton relaxation with an enhancement factor of ~ 440.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-45554-y