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