BaTiO_(3)/p-GaN/Au self-driven UV photodetector with bipolar photocurrent controlled by ferroelectric polarization

作     者：韩无双 刘可为 杨佳霖 朱勇学 程祯 陈星 李炳辉 刘雷 申德振 Wushuang Han;Kewei Liu;Jialin Yang;Yongxue Zhu;Zhen Cheng;Xing Chen;Binghui Li;Lei Liu;Dezhen Shen

作者机构：State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第4期

页      面：202-207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] 080501[工学-材料物理与化学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.62074148,61875194,11727902,12204474,12304111,and 12304112) the Youth Innovation Promotion Association,Chinese Academy of Sciences (Grant No.2020225) Jilin Province Science Fund (Grant Nos.20220101053JC and 20210101145JC) Jilin Province Young and Middle-Aged Science and Technology Innovation Leaders and Team Project (Grant No.20220508153RC) 

主　　题：ferroelectric effect bipolar self-driven photodetector 

摘      要：Ferroelectric materials are promising candidates for ultraviolet photodetectors due to their ferroelectric *** this work,a BaTiO_(3)/p-GaN/Au hybrid heterojunction-Schottky self-driven ultraviolet photodetector was fabricated with excellent bipolar photoresponse *** 0 V bias,the direction of the photocurrent can be switched by flipping the depolarization field of BaTiO_(3),which allows the performance of photodetectors to be controlled by the ferroelectric ***,a relatively large responsivity and a fast response speed can be also *** particular,when the depolarization field of BaTiO_(3) is in the same direction of the built-in electric field of the Au/p-GaN Schottky junction(up polarized state),the photodetector exhibits a high responsivity of 18 mA/W at 360 nm,and a fast response speed of40 ms at 0 *** findings pave a new way for the preparation of high-performance photodetectors with bipolar photocurrents.