Graded composition and doping p-i-n Al_(x)Ga_(1−x)As/GaAs detector for unbiased voltage operation

作     者：Zhi-Fu Zhu Ji-Jun Zou Zhi-Jia Sun He Huang Qing-Lei Xiu Zhong-Ming Zhang Yong Gan Chen-Xian Guo Shao-Tang Wang Xiu-Ping Yue Guo-Li Kong Zhi-Fu Zhu;Ji-Jun Zou;Zhi-Jia Sun;He Huang;Qing-Lei Xiu;Zhong-Ming Zhang;Yong Gan;Chen-Xian Guo;Shao-Tang Wang;Xiu-Ping Yue;Guo-Li Kong

作者机构：School of Information EngineeringZhengzhou University of TechnologyZhengzhou450044China Engineering Research Center of Nuclear Technology Application(East China University of Technology)Ministry of EducationNanchang330013China State Key Laboratory of Particle Detection and ElectronicsInstitute of High Energy PhysicsChinese Academy of SciencesBeijing100049China Engineering DepartmentLA14YWLancaster UniversityLancasterUK 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2022年第33卷第7期

页      面：73-82页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 08[工学] 0827[工学-核科学与技术] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(No.61964001) General Project of Jiangxi Province Key R&D Program(No.20212BBG73012) Natural Science Foundation of Jiangxi Province(No.20192BAB207033) Key Scientific Research Projects of Henan Higher Education Institutions(No.22A490001) State Key Laboratory of Particle Detection and Electronics(No.SKLPDE-KF-2019) Jiangxi Provincial Postdoctoral Science Foundation(No.2019RC30). 

主　　题：Graded composition Graded doping Detector p-i-n Al_(x)Ga_(1−x)As/GaAs 

摘      要：p-i-n Al_(x)Ga_(1−x)As/GaAs detectors with graded compositions and graded doping were grown and prepared.From the current-voltage and capacitance-voltage measurement results,the devices had good p-n junction diode characteristics,and the electric field strength under an unbiased voltage was 1.7×10^(5) Vcm^(-1).The full width at half maximum and charge collection efficiency of the detectors obtained from energy spectrum measurements of 5.48-MeV alpha particles were 3.04 and approximately 93%,respectively.In this study,we created the most advanced and promising state-of-the-art unbiased detector reported to date.