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

ABSTRACT: 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 MoS₂/hBN/WS₂ 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 MoS₂ 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 characterist

SUBMITTER: Hu Z 

PROVIDER: S-EPMC10897444 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature