Skip to Main content Skip to Navigation
Journal articles

Electroluminescence from HgTe Nanocrystals and its Use for Active Imaging

Abstract : Mercury telluride (HgTe) nanocrystals are among of the most versatile infrared (IR) materials with the absorption of first optical absorption which can be tuned from visible to the THz range. Therefore, they have been extensively considered as near IR emitters and as absorbers for low-cost IR detectors. However, the electroluminescence of HgTe remains poorly investigated in spite of its ability to go toward longer wavelengths compared to traditional lead sulfide (PbS). Here, we demonstrate a light emitting diode (LED) based on an indium tin oxide (ITO)/zinc oxide (ZnO)/ZnO-HgTe/PbS/gold stacked structure, where the emitting layer consists of a ZnO/HgTe bulk heterojunction which drives the charge balance in the system. This LED has low turn-on voltage, long lifetime, and high brightness. Finally, we conduct short wavelength infrared (SWIR) active imaging, where illumination is obtained from a HgTe NC-based LED, and demonstrate moisture detection.
Complete list of metadatas

Cited literature [46 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02899117
Contributor : Emmanuel Lhuillier <>
Submitted on : Tuesday, July 14, 2020 - 7:57:39 PM
Last modification on : Saturday, September 26, 2020 - 11:44:12 PM
Long-term archiving on: : Monday, November 30, 2020 - 10:17:51 PM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2021-01-14

Please log in to resquest access to the document

Identifiers

Citation

Junling Qu, Prachi Rastogi, Charlie Gréboval, Delphine Lagarde, Audrey Chu, et al.. Electroluminescence from HgTe Nanocrystals and its Use for Active Imaging. Nano Letters, American Chemical Society, 2020, ⟨10.1021/acs.nanolett.0c02557⟩. ⟨hal-02899117⟩

Share

Metrics

Record views

85