Resonant cavity-enhanced colloidal quantum-dot dual-band infrared photodetectors

被引：16
作者：
Luo, Yuning [1 ,2 ]
Zhang, Shuo [1 ,2 ]
Tang, Xin [1 ,2 ,3 ]
Chen, Menglu [1 ,2 ,3 ]
机构：
[1] Beijing Inst Technol, Sch Opt & Photon, Beijing, Peoples R China
[2] Beijing Key Lab Precis Optoelect Measurement Inst, Beijing, Peoples R China
[3] Beijing Inst Technol, Yangtze Delta Reg Acad, Beijing, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2022年 / 10卷 / 21期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
EMISSION; SENSOR;
D O I：
10.1039/d2tc01122k
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Infrared multispectral detection is explored extensively due to its wide applications in military reconnaissance, auto-driving and weather forecasting. As an alternative to epitaxial semiconductors, the wide spectral tunability and optical versatility of colloidal quantum dots (CQDs) have inspired various high-performance optoelectronic devices. Here, we demonstrate an integration of the CQD dual-band infrared photodetector and a Fabry-Perot resonance cavity, which provides a bias-switchable spectral response in the short-wave infrared (SWIR) and mid-wave infrared (MWIR) range. At the same time, the performance of the detector can be elevated by the improved optical collection efficiency and spectral selectivity due to the resonant cavity. The photodetector has a responsivity of 1.1 A W-1 and 1.6 A W-1 in SWIR and MWIR, respectively. The detector performance is illustrated by dual-band infrared imaging and spectral absorption measurement.
引用
收藏
页码：8218 / 8225
页数：8
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