Demonstration of Far-Infrared GaAs/AlGaAs Quantum Well Photodetectors for Broadband Wavelength Detection

作     者：SHEN Wen-Zhong Perera A.G.U 沈文忠;Perera A.G.U

作者机构：Department of Applied PhysicsShanghai Jiao Tong UniversityShanghai 200030 National Laboratory for Infrared PhysicsShanghai Institute of Technical PhysicsShanghai 200083 Department of Physics and AstronomyGeorgia State UniversityAtlantaGA 30303USA 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2000年第17卷第12期

页      面：921-923页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Supported in part by the National Natural Science Foundation of China QMX TRAPOYT and CKSP 

主　　题：GaAs/AlGaAs Infrared Quantum 

摘      要：We discuss the realization of broadband wavelength detection by demonstrating the longest cutoff wavelength(λc=28.6μm)far-infrared GaAs/AIGaAs quantum well infrared photodetectors(QWIPs).The responsivity is comparable to that of mid-infrared GaAs/AIGaAs and InGaAs/GaAs QWIPs,with a responsivity of 0.265 A/W and detectivity of 3.4x109 ***1/2/W at the peak wavelength of 26.9μm at *** on the temperature-dependent dark current and response results,it is expected that similar performance can be obtained at least up to 20 *** ways to expand the wavelength coverage are also addressed.