典型文献
Highly Sensitive Mid-Infrared Photodetector Enabled by Plasmonic Hot Carriers in the First Atmospheric Window
文献摘要：
The first atmospheric window of 3-5 μm in the mid-infrared(MIR)spectral range pertains to crucial appli-cation fields,with particular scientific and technological importance.However,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 integration.In this study,a plasmonic hot electron-empowered MIR photodetector based on Al-doped ZnO(AZO)/bi-layer graphene het-erostructure is demonstrated.Free electrons oscillate coherently in AZO disk arrays,resulting in strong localized surface plasmon resonance(LSPR)in the MIR region.The photoelectric conversion efficiency at 3-5 μm is sig-nificantly improved due to plasmon-induced hot-electron extraction and LSPR-enhanced light absorption.The specific detectivity reaches about 1.4×1011 Jones and responsivity is up to 4712.3 A/W at wavelength of 3 μm at room temperature.The device's specific detectivity is among the highest performance of commercial state-of-the-art photodetectors and superior to most of the other 2D materials based photodetectors in the MIR region.These results demonstrate that a plasmonic heavily doped metal oxides/2D material heterostructure is a suitable architecture for constructing highly sensitive room-temperature MIR photodetectors.
文献关键词：
中图分类号：
作者姓名：
Yuan-Fang Yu;Ye Zhang;Fan Zhong;Lin Bai;Hui Liu;Jun-Peng Lu;Zhen-Hua Ni
作者机构：
School of Physics,Southeast University,Nanjing 211189,China;National Laboratory of Solid State Microstructures&School of Physics,Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China
文献出处：
引用格式：
[1]Yuan-Fang Yu;Ye Zhang;Fan Zhong;Lin Bai;Hui Liu;Jun-Peng Lu;Zhen-Hua Ni-.Highly Sensitive Mid-Infrared Photodetector Enabled by Plasmonic Hot Carriers in the First Atmospheric Window)[J].中国物理快报（英文版）,2022(05):186-193
A类：
Photodetector
B类：
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AB值：
0.649382
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