Gate-Switchable Arrays of Quantum Light Emitters in Contacted Monolayer MoS 2 van der Waals Heterodevices

We demonstrate electrostatic switching of individual, site-selectively generated matrices of single photon emitters (SPEs) in MoS van der Waals heterodevices. We contact monolayers of MoS in field-effect devices with graphene gates and hexagonal boron nitride as the dielectric and graphite as bottom...

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Published in:Nano letters 2021-01, Vol.21 (2), p.1040-1046
Main Authors: Hötger, Alexander, Klein, Julian, Barthelmi, Katja, Sigl, Lukas, Sigger, Florian, Männer, Wolfgang, Gyger, Samuel, Florian, Matthias, Lorke, Michael, Jahnke, Frank, Taniguchi, Takashi, Watanabe, Kenji, Jöns, Klaus D, Wurstbauer, Ursula, Kastl, Christoph, Müller, Kai, Finley, Jonathan J, Holleitner, Alexander W
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cited_by cdi_FETCH-LOGICAL-c1191-98572dbabf140f0c32f60c03485bf513d8d645abed4e54cae77ab1c8ee4971af3
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container_end_page 1046
container_issue 2
container_start_page 1040
container_title Nano letters
container_volume 21
creator Hötger, Alexander
Klein, Julian
Barthelmi, Katja
Sigl, Lukas
Sigger, Florian
Männer, Wolfgang
Gyger, Samuel
Florian, Matthias
Lorke, Michael
Jahnke, Frank
Taniguchi, Takashi
Watanabe, Kenji
Jöns, Klaus D
Wurstbauer, Ursula
Kastl, Christoph
Müller, Kai
Finley, Jonathan J
Holleitner, Alexander W
description We demonstrate electrostatic switching of individual, site-selectively generated matrices of single photon emitters (SPEs) in MoS van der Waals heterodevices. We contact monolayers of MoS in field-effect devices with graphene gates and hexagonal boron nitride as the dielectric and graphite as bottom gates. After the assembly of such gate-tunable heterodevices, we demonstrate how arrays of defects, that serve as quantum emitters, can be site-selectively generated in the monolayer MoS by focused helium ion irradiation. The SPEs are sensitive to the charge carrier concentration in the MoS and switch on and off similar to the neutral exciton in MoS for moderate electron doping. The demonstrated scheme is a first step for producing scalable, gate-addressable, and gate-switchable arrays of quantum light emitters in MoS heterostacks.
doi_str_mv 10.1021/acs.nanolett.0c04222
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title Gate-Switchable Arrays of Quantum Light Emitters in Contacted Monolayer MoS 2 van der Waals Heterodevices
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