摘要
二类超晶格(T2SL)红外探测器灵敏度高、响应速度快,适用于更远距离成像、更高速度的运动目标追踪。量子效率(QE)是决定光电探测器能否高质量成像的关键指标之一,提高T2SL红外探测器的QE具有重要意义。为了更直观地理解T2SL红外探测器QE的提高方式,梳理了中长波T2SL红外探测器提高QE的方法,归纳了QE在不同调控手段下能达到的程度,重点讨论了能带结构设计、吸收层厚度设定、吸收层掺杂类型选择、材料改进等方面对T2SL红外探测器QE的影响情况,并对T2SL红外探测器高QE的研究现状和未来发展进行了展望。
Type-Ⅱ superlattice(T2SL)infrared detector has high sensitivity and fast response speed,which is suitable for longer distance imaging and higher speed tracking of moving targets.Quantum efficiency(QE)is one of the key indicators to determine whether the photodetector can achieve high quality imaging,so it is of great significance to improve the QE of T2SL infrared detector.In order to have a more intuitive understanding of how T2SL infrared detector QE can be improved,the methods to improve QE of mid-long wave T2SL infrared detector were reviewed,and the extent to which QE can be achieved under different regulatory means were summarized.The effects of band structure design,absorption layer thickness setting,absorption layer doping type selection and material improvement on QE of T2SL infrared detectors are discussed,and the research status and future development of high QE of T2SL infrared detectors are also prospected.
作者
杨雪艳
孙童
关晓宁
赵雅琪
张凡
张焱超
芦鹏飞
周峰
YANG Xueyan;SUN Tong;GUAN Xiaoning;ZHAO Yaqi;ZHANG Fan;ZHANG Yanchao;LU Pengfei;ZHOU Feng(School of Integrated Circuits,Beijing University of Posts and Telecommunications,Beijing 100876,China;Zhejiang SuperMat Sen-Ray Optoelectronics Co.Ltd.,Ningbo 315412,China)
出处
《激光技术》
CAS
CSCD
北大核心
2024年第6期822-831,共10页
Laser Technology
基金
红外探测器全国重点实验室开放课题资助项目(IRDT-23-S01)。
关键词
探测器
二类超晶格
量子效率
吸收层
detector
type-Ⅱ superlattice
quantum efficiency
absorption layer
