title: Sensing Properties of a Novel Temperature Sensor Based on Field Assisted Thermal Emission.
abstract: The existing temperature sensors using carbon nanotubes (CNTs) are limited by low sensitivity, complicated processes, or dependence on microscopy to observe the experimental results. Here we report the fabrication and successful testing of an ionization temperature sensor featuring non-self-sustaining discharge. The sharp tips of nanotubes generate high electric fields at relatively low voltages, lowering the work function of electrons emitted by CNTs, and thereby enabling the safe operation of such sensors. Due to the temperature effect on the electron emission of CNTs, the collecting current exhibited an exponential increase with temperature rising from 20 °C to 100 °C. Additionally, a higher temperature coefficient of 0.04 K-1was obtained at 24 V voltage applied on the extracting electrode, higher than the values of other reported CNT-based temperature sensors. The triple-electrode ionization temperature sensor is easy to fabricate and converts the temperature change directly into an electrical signal. It shows a high temperature coefficient and good application potential.
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. panzhigang0703@126.com.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Pan
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. zhyong@mail.xjtu.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. celia111@stu.xjtu.edu.cn.
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Cheng
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. tongjiaming@stu.xjtu.edu.cn.
authors.forename: Jiaming
authors.initials: J
authors.lastname: Tong
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. cqy837879002@sina.com.
authors.forename: Qiyu
authors.initials: Q
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. zhangjp22@stu.xjtu.edu.cn.
authors.forename: Jianpeng
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. zjx972200751@stu.xjtu.edu.cn.
authors.forename: Jiaxiang
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Vacuum Micro-Electronic & Micro-Electronic Mechanical Institute, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China. lx@mail.xjtu.edu.cn.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710-049, China. liyunjia@xjtu.edu.cn.
authors.forename: Yunjia
authors.initials: Y
authors.lastname: Li
keywords: carbon nanotubes; emission; ionization; temperature sensor