柔性光热电探测器研究进展  

Research Progress of Flexible Photothermoelectric Detectors

作　　者：刘睿丰 陈猛 王迎新[1,2] 赵自然[1,2] Liu Ruifeng;Chen Meng;Wang Yingxin;Zhao Ziran(Department of Engineering Physics,Tsinghua University,Beijing 100084,China;National Engineering Research Center for Dangerous Articles and Explosives Detection Technologies,Beijing 100084,China)

机构地区：[1]清华大学工程物理系,北京100084 [2]危爆物品探测技术国家工程研究中心,北京100084

出　　处：《中国激光》2023年第23期1-22,共22页Chinese Journal of Lasers

基　　金：国家自然科学基金(62105178)。

摘　　要：柔性光电探测器具有体积小、重量轻、可弯曲等特点,可以直接安装在不规则物体的表面,实现对空间信息的连续测量,目前已被广泛应用于小型化能源设备、可穿戴电子产品、虚拟现实交互装备、植入式医疗器械的开发和制备,在新能源、微电子、人工智能、医疗保健等领域展现出了巨大的应用前景。基于光热电效应的新型光电探测器具有大带宽、零偏压、高速、室温工作等优势,并且随着新型热电材料和纳米光子学的发展,其在响应度和响应速度方面均取得了令人瞩目的进展。若选取适当的光敏材料和衬底材料,光热电效应亦可应用于柔性光电探测器,尤其是可在传统光子学探测技术难以企及的长波红外至太赫兹波段实现应用。本文综述了近年来可见光至太赫兹波段柔性光热电探测器的研究进展,介绍了具有柔性特性的碳材料、无机和有机化合物在光热电探测领域的探索、应用与优化机理,并简要讨论了该类探测器的发展前景和面临的挑战。Significance Flexible photothermoelectric(PTE)detectors have considerable research significance owing to their unique characteristics,including flexibility and PTE properties.Flexible PTE detectors have the characteristics of lightness,flexibility,and softness,allowing them to be attached directly to irregular surfaces for continuous measurement of spatial information.They have considerable potential in the development and fabrication of miniaturized energy equipment,virtual-reality interactive systems,and implantable medical devices,which have application prospects in new energy,microelectronics,artificial intelligence,medical care,and other fields.They are also attractive for use in wearable devices,as they offer several advantages over traditional rigid sensors.These detectors can be easily bent or shaped to fit the contours of the human body,which allows comfortable and unobtrusive monitoring of physiological parameters.Furthermore,the PTE properties of these detectors allow them to have ultra-broadband responses.In contrast to other types of detectors,which are typically limited to a specific wavelength range,PTE detectors can detect light across a wide range of wavelengths,from ultraviolet to terahertz.This makes them highly versatile and useful for various applications,including spectroscopy,imaging,and sensing.Another advantage of PTE detectors is their high speed.The PTE response breaks the limit of the low response speed of traditional thermal detectors by introducing hot carrier-assisted heat conduction.This fast response makes PTE detectors well-suited for applications that require rapid detection,such as high-speed imaging and sensing.Additionally,they can operate under zero-bias and room-temperature conditions,which makes them convenient and cost-effective to use.In contrast,other types of broadband detectors,such as bolometers,typically require a bias voltage to operate and may require cooling to achieve optimal performance.Overall,the research into flexible PTE detectors has significant implicatio

关 键 词：探测器 柔性材料 可穿戴设备 红外 太赫兹 

分 类 号：TN247[电子电信—物理电子学]