Electroluminescent vertical tunneling junctions based on WSe 2 monolayer quantum emitter arrays: Exploring tunability with electric and magnetic fields

Electroluminescent vertical tunneling junctions based on WSe 2 monolayer quantum emitter arrays: Exploring tunability with electric and magnetic fields

We experimentally demonstrate the creation of defects in monolayer WSe via nanopillar imprinting and helium ion irradiation. Based on the first method, we realize atomically thin vertical tunneling light-emitting diodes based on WSe monolayers hosting quantum emitters at deterministically specified...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 2024-06, Vol.121 (23), p.e2401757121
Hauptverfasser: Howarth, James, Vaklinova, Kristina, Grzeszczyk, Magdalena, Baldi, Giulio, Hague, Lee, Potemski, Marek, Novoselov, Kostya S, Kozikov, Aleksey, Koperski, Maciej
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container_title Proceedings of the National Academy of Sciences - PNAS
container_volume 121
creator Howarth, James
Vaklinova, Kristina
Grzeszczyk, Magdalena
Baldi, Giulio
Hague, Lee
Potemski, Marek
Novoselov, Kostya S
Kozikov, Aleksey
Koperski, Maciej
description We experimentally demonstrate the creation of defects in monolayer WSe via nanopillar imprinting and helium ion irradiation. Based on the first method, we realize atomically thin vertical tunneling light-emitting diodes based on WSe monolayers hosting quantum emitters at deterministically specified locations. We characterize these emitters by investigating the evolution of their emission spectra in external electric and magnetic fields, as well as by inducing electroluminescence at low temperatures. We identify qualitatively different types of quantum emitters and classify them according to the dominant electron-hole recombination paths, determined by the mechanisms of intervalley mixing occurring in fundamental conduction and/or valence subbands.
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title Electroluminescent vertical tunneling junctions based on WSe 2 monolayer quantum emitter arrays: Exploring tunability with electric and magnetic fields
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