Single-Walled Carbon Nanotube-Controlled Meyer-Neldel Rules in Vanadium Oxide Films for Applications as Thermistor Materials in Sensors and Detectors

doi:10.1021/acsanm.8b01770

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	Single-Walled Carbon Nanotube-Controlled Meyer-Neldel Rules in Vanadium Oxide Films for Applications as Thermistor Materials in Sensors and Detectors
	Qiong He 1,2; Xiangdong Xu 1; Yu Gu 1; Xiaomeng Cheng 1; Jimmy Xu 3; Yadong Jiang 1
刊名	ACS APPLIED NANO MATERIALS
	2018-12-01
卷号	1 期号:12 页码:6959-6966
关键词	electrical conductivity Meyer-Neldel rule (MNR) vanadium oxides carbon nanotubes composite films
ISSN号	2574-0970
DOI	10.1021/acsanm.8b01770
文献子类	J
英文摘要	Owing to their excellent electrical properties, vanadium oxide (VOx) films are applied widely as thermistor materials in gas sensors and infrared detectors. The Meyer-Neldel rule (MNR) which was first discovered in 1937 has been widely observed in the properties of electrical conductivity, mobility, diffusion, and desorption. Results in this work reveal that the electrical conductivity of VOx films prepared by organic sol-gel and annealed at 265-355 degrees C obeys normal MNR behavior with a positive Meyer-Neldel activation energy (E-MN) of +16 meV. After incorporation of VOx with COOH-functionalized single-walled carbon nanotubes (SWCNTs), normal MNR with a positive E-MN of +13 meV is similarly measured at low annealing temperatures (<= 310 degrees C). But interestingly, a different, inverse MNR with a negative E-MN of -43 meV is observed at high temperatures (>= 310 degrees C). This work suggests a new route to chemically convert the macroscopic physical MNR behavior of VOx by SWCNTs. These results will be helpful not only for gaining insights into the origins of and modifying the MNR behaviors but also for rationally controlling the electrical properties of the VOx and VOx-SWCNT films for sensor or detector applications.
WOS关键词	TRANSISTORS ; CONNECTION ; OXIDATION ; POLARONS ; STATES
语种	英语
WOS记录号	WOS:000461401300049
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9235]
专题	光电技术研究所_微细加工光学技术国家重点实验室（开放室）
作者单位	1.State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, P. R. China 2.State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, P. R. China 3.School of Engineering, Brown University, Providence, Rhode Island 02912, United States
推荐引用方式 GB/T 7714	Qiong He,Xiangdong Xu,Yu Gu,et al. Single-Walled Carbon Nanotube-Controlled Meyer-Neldel Rules in Vanadium Oxide Films for Applications as Thermistor Materials in Sensors and Detectors[J]. ACS APPLIED NANO MATERIALS,2018,1(12):6959-6966.
APA	Qiong He,Xiangdong Xu,Yu Gu,Xiaomeng Cheng,Jimmy Xu,&Yadong Jiang.(2018).Single-Walled Carbon Nanotube-Controlled Meyer-Neldel Rules in Vanadium Oxide Films for Applications as Thermistor Materials in Sensors and Detectors.ACS APPLIED NANO MATERIALS,1(12),6959-6966.
MLA	Qiong He,et al."Single-Walled Carbon Nanotube-Controlled Meyer-Neldel Rules in Vanadium Oxide Films for Applications as Thermistor Materials in Sensors and Detectors".ACS APPLIED NANO MATERIALS 1.12(2018):6959-6966.