Room Temperature Fluorescence Blinking in MoS 2 Atomic Layers by Single Photon Energy Transfer

The quantum optical phenomena, such as single‐photon emission, in transition metal dichalcogenides (TMDCs) have triggered extensive research on 2D material‐based quantum optics and devices. By far, most reported quantum optical emissions in TMDCs are based on atomic defects or the local confinement...

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Published in:Laser & photonics reviews 2022-08, Vol.16 (8)
Main Authors: He, Mai, Ge, Cuihuan, Braun, Kai, Huang, Lanyu, Yang, Xin, Zhao, Hepeng, Meixner, Alfred J., Wang, Xiao, Pan, Anlian
Format: Article
Language:English
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Summary:The quantum optical phenomena, such as single‐photon emission, in transition metal dichalcogenides (TMDCs) have triggered extensive research on 2D material‐based quantum optics and devices. By far, most reported quantum optical emissions in TMDCs are based on atomic defects or the local confinement of excitons. In contrast, energy transfer between two materials could also manipulate the photon emission behaviors in materials, even at the single‐photon level. Here, fluorescence blinking from MoS 2 atomic layers in quantum dot (QD)/MoS 2 hybrid heterostructure at room temperature is reported. The single‐photon nature of the QDs in heterostructures by second‐order photon correlation measurements is demonstrated. Based on the transient PL spectroscopy and PL time trajectories, the fluorescence blinking behavior in MoS 2 is attributed to the single‐photon energy transfer from QD to MoS 2 . This work could open the possibility to achieve correlated quantum emitters in TMDCs at room temperature.
ISSN:1863-8880
1863-8899
DOI:10.1002/lpor.202200144