An Optoelectronic thermometer based on microscale infrared-to-visible conversion devices  

作　　者：He Ding Guoqing Lv Xue Cai Junyu Chen Ziyi Cheng Yanxiu Peng Guo Tang Zhao Shi Yang Xie Xin Fu Lan Yin Jian Yang Yongtian Wang Xing Sheng 

机构地区：[1]Beijing Engineering Research Center of Mixed Reality and Advanced Display,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China [2]Department of Electronic Engineering,Beijing National Research Center for Information Science and Technology,Institute for Precision Medicine,Center for Flexible Electronics Technology,and IDG/McGovern Institute for Brain Research,Tsinghua University,Beijing 100084,China [3]School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Light(Science & Applications)》2022年第6期1158-1165,共8页光（科学与应用)（英文版）

基　　金：National Natural Science Foundation of China(NSFC)(62005016,61874064);Tsinghua University Initiative Scientifc Research Program;Bejing Municipal Natural Science Foundation(4202032);EnSan Frontier Innovation Foundation(2022003).

摘　　要：Thermometric detectors are crucial in evaluating the condition of target objects spanning from environments to the human body.Optical-based thermal sensing tools have received extensive attention,in which the photon upconversion process with low autofluorescence and high tissue penetration depth is considered as a competent method for temperature monitoring,particularly in biomedical fields.Here,we present an optoelectronic thermometer via infrared-to-visible upconversion,accomplished by integrated light receiving and emission devices.Fully fabricated thin-film,microscale devices present temperature-dependent light emission with an intensity change of 1.5%℃^(-1) and a spectral shift of 0.18 nm℃^(-1).The sensing mechanism is systematically characterized and ascribed to temperature dependent optoelectronic properties of the semiconductor band structure and the circuit operation condition.Patterned device arrays showcase the capability for spatially resolved temperature mapping.Finally,in vitro and in vivo experiments implemented with integrated fiber-optic sensors demonstrate real-time thermal detection of dynamic human activity and in the deep brain of animals,respectively.

关 键 词：VISIBLE OPTOELECTRONIC thermal 

分 类 号：TB942[一般工业技术—计量学]