Mode-switching single-pixel imaging via a high-performance perovskite-Si dual-mode photodetector  

作　　者：YUJIN LIU DONGXU LIN JINGYANG XING HANYAN ZHAO HONGLING WAN HAO WANG ZHONG JI XUELI CHEN 

机构地区：[1]Innovation Center for Advanced Medical Imaging and Intelligent Medicine,Guangzhou Institute of Technology,Xidian University,Guangzhou 510555,China [2]Shenzhen Key Laboratory of Intelligent Robotics and Flexible Manufacturing Systems,Department of Mechanical and Energy Engineering,SUSTech Energy Institute for Carbon Neutrality,Southern University of Science and Technology,Shenzhen 518055,China [3]Center for Biomedical-Photonics and Molecular Imaging,Advanced Diagnostic-Therapy Technology and Equipment Key Laboratory of Higher Education Institutions in Shaanxi Province,School of Life Science and Technology,Xidian University,Xi’an 710126,China

出　　处：《Photonics Research》2024年第12期2873-2880,共8页光子学研究(英文版)

基　　金：National Natural Science Foundation of China(62405236,62375210,62275210,62105123);National Young Talent Program;Shaanxi Young Top-notch Talent Program;Key Research and Development Projects of Shaanxi Province(2023-YBGY-195);Xidian University Specially Funded Project for Interdisciplinary Exploration(TZJH2024059,TZJH2024060).

摘　　要：Visible–near-infrared(VIS-NIR)dual-mode imaging can expand the human perception limit.However,the development of dual-mode image sensors is still challenging due to complex fabrication processes and readout circuit design.Here,we design a simple-structured(perovskite-Au/Si/Ag)dual-mode photodetector.This unique asymmetric electrode design allows the device to support two operating modes at zero bias.The device exhibits a detection range covering 400–1100 nm under top illumination mode,with a peak specific detectivity of up to 5.56×1013 Jones.Under bottom illumination mode,the device demonstrates pronounced narrowband NIR response characteristics.More importantly,we develop a dual-mode single-pixel imaging system based on this device,bypassing the fabrication processes of high-density array image sensors.The system exhibits excellent VISNIR dual-mode imaging results,effectively separating NIR and VIS information and enhancing infrared details in the fused images.Interestingly,we discover that the system can effectively suppress ringing artifacts,achieving infrared information perception at a low sampling rate,which can accelerate the imaging speed by∼16 times(reduced from∼3.2 s to∼0.2 s).Our proposed dual-mode single-pixel imaging technology offers new means for material identification and intelligent perception.

关 键 词：mode ILLUMINATION DETAILS 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TP391.41[自动化与计算机技术—控制科学与工程]