Electroluminescence from nanocrystals above 2 μm

被引：46

作者：

Qu, Junling ^{[1
]}

Weis, Mateusz ^{[2
]}

Izquierdo, Eva ^{[1
]}

Mizrahi, Simon Gwenael ^{[2
]}

Chu, Audrey ^{[1
]}

Dabard, Corentin ^{[1
,3
]}

Greboval, Charlie ^{[1
]}

Bossavit, Erwan ^{[1
]}

Prado, Yoann ^{[1
]}

Peronne, Emmanuel ^{[2
]}

Ithurria, Sandrine ^{[3
]}

Patriarche, Gilles ^{[4
]}

Silly, Mathieu G. ^{[5
]}

Vincent, Gregory ^{[6
]}

Boschetto, Davide ^{[2
]}

Lhuillier, Emmanuel ^{[1
]}

机构：

[1] Sorbonne Univ, Inst NanoSci Paris, Paris, France

[2] CNRS, Inst Polytech Paris, Lab Opt Appl, Ecole Polytech, Palaiseau, France

[3] Sorbonne Univ, ESPCI Paris, PSL Res Univ, Lab Phys & Etud Mat, Paris, France

[4] Univ Paris Saclay, Ctr Nanosci & Nanotechnol, Palaiseau, France

[5] Synchrotron SOLEIL, St Aubin, France

[6] ONERA French Aerosp Lab, Palaiseau, France

来源：

NATURE PHOTONICS | 2022年 / 16卷 / 01期

基金：

欧洲研究理事会;

关键词：

HGTE NANOCRYSTALS; QUANTUM DOTS; THRESHOLD; EMISSION;

D O I：

10.1038/s41566-021-00902-y

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Visible nanocrystal-based light-emitting diodes (LEDs) are about to become commercially available. However, their infrared counterparts suffer from two key limitations. First, III-V semiconductor technologies are strong competitors. Second, their potential for operation beyond 1.7 mu m remains unexplored. The range from 1.5 to 4 mu m corresponds to a technological gap in which the efficiency of interband quantum-well-based devices vanishes and quantum cascade lasers are not efficient enough. Powerful infrared LEDs in this range are needed for applications such as active imaging, organic molecule sensing and airfield lighting. Here we report the design of a HgTe nanocrystal-based LED with luminescence between 2 and 2.3 mu m. With an external quantum efficiency of 0.3% and radiance up to 3 W Sr-1 m(-2), these HgTe LEDs already present a competitive performance for emission above 2 mu m.

引用

页码：38 / +

页数：9

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