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High-performance broadband flexible photodetector based on Gd_(3)Fe_(5)O_(12)-assisted double van der Waals heterojunctions

查看全文 作　　者：Ze [1]Zhang;Peirui [1]Ji;Shaobo [1]Li;Fei [1]Wang;Shengmei [1]He;Yiwei [1]Cheng;Shuhao [1]Zhao;Kaili [2]Li;Xiaomin [1]Wang;Yu [2]Wang;Shuming [1]Yang 高影响力作者 机构地区：[1]State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an,Shaanxi,China;[2]MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter,Xi’an Jiaotong University,Xi’an,Shaanxi,China高影响力机构 出　　处：《Microsystems & Nanoengineering》索引2023年第9卷第4期,共9页高影响力期刊 基　　金：This work was supported by the China National Funds for Distinguished Young Scientists(No.52225507);the National Key Research and Development Program of China(No.2021YFF0700402);the Fundamental Research Funds for the Central Universities. 摘　　要：Flexible photodetectors are fundamental components for developing wearable systems,which can be widely used for medical detection,environmental monitoring and flexible imaging.However,compared with 3D materials,lowdimensional materials have degraded performance,a key challenge for current flexible photodetectors.Here,a highperformance broadband photodetector has been proposed and fabricated.By combining the high mobility of graphene(Gr)with the strong light–matter interactions of single-walled carbon nanotubes(SWCNTs)and molybdenum disulfide(MoS2),the flexible photodetector exhibits a greatly improved photoresponse covering the visible to near-infrared range.Additionally,a thin layer of gadolinium iron garnet(Gd_(3)Fe_(5)O_(12),GdlG)film is introduced to improve the interface of the double van der Waals heterojunctions to reduce the dark current.The SWCNT/GdIG/Gr/GdIG/MoS2 flexible photodetector exhibits a high photoresponsivity of 47.375 A/W and a high detectivity of 1.952×1012 Jones at 450 nm,a high photoresponsivity of 109.311 A/W and a high detectivity of 4.504×10^(12) Jones at 1080 nm,and good mechanical stability at room temperature.This work demonstrates the good capacity of GdIGassisted double van der Waals heterojunctions on flexible substrates and provides a new solution for constructing high-performance flexible photodetectors. 关 键 词：performance DOUBLE CONSTRUCTING
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