Surface plasmon assisted high-performance photodetectors based on hybrid TiO_(2)@GaO_(x)N_(y)-Ag heterostructure

作     者：Jiajia Tao Guang Zeng Xiaoxi Li Yang Gu Wenjun Liu David Wei Zhang Hongliang Lu Jiajia Tao;Guang Zeng;Xiaoxi Li;Yang Gu;Wenjun Liu;David Wei Zhang;Hongliang Lu

作者机构：State Key Laboratory of ASIC and SystemShanghai Institute of Intelligent Electronics&SystemsSchool of MicroelectronicsFudan Univer-sityShanghai 200433China Jiashan Fudan InstituteJiaxing 314100China 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2023年第44卷第7期

页      面：45-53页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 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] 

基　　金：supported by National Natural Science Foundation of China(Nos.62027818,61874034,and 51861135105) Natural Science Foundation of Shanghai(No.18ZR1405000) Shanghai Science and Technology Innovation Program(No.19520711500) 

主　　题：TiO_(2)@GaO_(x)N_(y)-Ag ultraviolet-visible photodetector type-Ⅱband structure plasmon resonance effect 

摘      要：In this work,we reported a high-performance-based ultraviolet-visible(UV-VIS)photodetector based on a TiO_(2)@GaO_(x)N_(y)-Ag *** particles were introduced into TiO_(2)@GaO_(x)N_(y)to enhance the visible light detection perfor-mance of the heterojunction *** 380 nm,the responsivity and detectivity of TiO_(2)@GaO_(x)N_(y)-Ag were 0.94 A/W and 4.79×109 Jones,respectively,and they increased to 2.86 A/W and 7.96×1010 Jones at 580 *** rise and fall times of the response were 0.19/0.23 and 0.50/0.57 s,***,at 580 nm,the responsivity of fabricated devices is one to four orders of magnitude higher than that of the photodetectors based on TiO_(2),Ga_(2)O_(3),and other *** excellent optoelectronic characteristics of the TiO_(2)@GaO_(x)N_(y)-Ag heterojunction device could be mainly attributed to the synergistic effect of the type-Ⅱband structure of the metal-semiconductor-metal heterojunction and the plasmon resonance effect of Ag,which not only effectively promotes the separation of photogenerated carriers but also reduces the recombination *** is fur-ther illuminated by finite difference time domain method(FDTD)simulation and photoelectric *** TiO_(2)@GaO_(x)N_(y)-Ag arrays with high-efficiency detection are suitable candidates for applications in energy-saving communica-tion,imaging,and sensing networks.