Highly Sensitive Mid-Infrared Photodetector Enabled by Plasmonic Hot Carriers in the First Atmospheric Window

作     者：Yuan-Fang Yu Ye Zhang Fan Zhong Lin Bai Hui Liu Jun-Peng Lu Zhen-Hua Ni 于远方;张也;仲帆;白琳;刘辉;吕俊鹏;倪振华

作者机构：School of PhysicsSoutheast UniversityNanjing 211189China National Laboratory of Solid State Microstructures&School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2022年第39卷第5期

页      面：108-112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] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2017YFA0205700) the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB30000000) the China Postdoctoral Science Foundation(Grant No.2021M690625) the Jiangsu Planned Projects for Postdoctoral Research Funds(Grant No.2021K106B) 

主　　题：Infrared Highly narrow 

摘      要：The first atmospheric window of 3-5μm in the mid-infrared(MIR)spectral range pertains to crucial application fields,with particular scientific and technological ***,conventional narrow-bandgap semiconductors operating at this band,represented by mercury cadmium telluride and indium antimonide,suffer from limited specific detectivity at room temperature and hindered optoelectronic *** this study,a plasmonic hot electron-empowered MIR photodetector based on Al-doped ZnO(AZO)/bi-layer graphene heterostructure is *** electrons oscillate coherently in AZO disk arrays,resulting in strong localized surface plasmon resonance(LSPR)in the MIR *** photoelectric conversion efficiency at 3-5μm is significantly improved due to plasmon-induced hot-electron extraction and LSPR-enhanced light *** specific detectivity reaches about 1.4×10^(11)Jones and responsivity is up to 4712.3 A/W at wavelength of 3μm at room *** device’s specific detectivity is among the highest performance of commercial state-ofthe-art photodetectors and superior to most of the other 2 D materials based photo detectors in the MIR *** results demonstrate that a plasmonic heavily doped metal oxides/2 D material heterostructure is a suitable architecture for constructing highly sensitive room-temperature MIR photodetectors.