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Article Dans Une Revue Advanced Optical Materials Année : 2023

Plasmon-assisted directional infrared photoluminescence of HgTe nanocrystals

Erwan Bossavit
Tung Huu Dang
Adrien Khalili
Huichen Zhang
Djamal Gacemi
Mathieu Silly
Claire Abadie
Bruno Gallas
Debora Pierucci
Yanko Todorov
Carlo Sirtori
Benjamin Diroll

Résumé

HgTe nanocrystals offer a unique spectral tunability with both absorption and emission covering the near and mid-infrared as well as the THz window. Nevertheless, a very limited amount of work has been dedicated to electroluminescence from this material. An efficient diode not only requires designing a structure that achieves a high electrical efficiency (i.e., efficient electron and hole injections), but also finding a way to efficiently extract the emitted photons. The shift from visible to infrared certainly demands revisiting the strategies proposed for shorter wavelengths (microlens arrays). Here we demonstrate that a metallic grating can be used to enhance the PL signal up to a factor 4 while enabling directionality in the emission, which is driven by the grating period.
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Dates et versions

hal-04183459 , version 1 (19-08-2023)

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Paternité - Pas d'utilisation commerciale

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Erwan Bossavit, Tung Huu Dang, Puyuan He, Mariarosa Cavallo, Adrien Khalili, et al.. Plasmon-assisted directional infrared photoluminescence of HgTe nanocrystals. Advanced Optical Materials, In press, pp.2300863. ⟨10.1002/adom.202300863⟩. ⟨hal-04183459⟩
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