摘要
阻挡杂质带(BIB)探测器是当前远红外天文探测领域的主流探测器。通过近表面加工技术成功制备出了高性能的Ge:B BIB探测器,响应波数范围从50 cm^(-1)到400 cm^(-1)。在3.5 K温度和30 mV工作电压下,器件在峰值响应84.9 cm^(-1)处的响应率达到21.46 A·W^(-1),探测率达到4.34×10^(14)cm·Hz^(1/2)·W^(-1)。研究了BIB探测器中界面势垒对响应光谱的影响。提出了一种新的激发模式—电极区内的载流子可以通过光激发的方式越过势垒。此外,还发现了一种增强BIB探测器在小波数处相对响应强度的方法。
Blocked impurity band(BIB)detectors are the state-of-the-art choice for far infrared astronomical observation. Ge:B BIB far infrared detector has been successfully developed using near-surface processing techniques. The spectral response covers a wide range from 50 cm^(-1)to 400 cm^(-1). At a temperature of 3. 5 K and a working voltage of 30 mV,the detector exhibits a highly competitive responsivity of 21. 46 A·W^(-1)and a highly competitive detectivity of 4. 34×10^(14)cm·Hz^(1/2)·W^(-1)at the peak response of 84. 9 cm^(-1). The influence of the interfacial barriers on the spectral response is investigated. A new excitation model that the carriers in the contact regions can be excited over the interfacial barriers is proposed. Moreover,a new method to enhance the relative response intensity of BIB detectors in the low wavenumber region is found.
作者
潘昌翊
牟浩
姚晓梅
胡桃
王宇
王超
邓惠勇
戴宁
PAN Chang-Yi;MOU Hao;YAO Xiao-Mei;HU Tao;WANG Yu;WANG Chao;DENG Hui-Yong;DAI Ning(State Key Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China;University of Chinese Academy of Sciences,Beijing 100049,China;Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China)
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第2期389-394,共6页
Journal of Infrared and Millimeter Waves
基金
Supported by National Natural Science Foundation of China(11933006)
the Frontier Science Research Project(Key Programs)of the Chinese Academy of Sciences(QYZDJ-SSW-SLH018)。
关键词
阻挡杂质带
探测器
界面势垒
激发模式
blocked impurity band
interfacial barrier
excitation model
far infrared
