Coupling p plus n Field-Effect Transistor Circuits for Low Concentration Methane Gas Detection

doi:10.3390/s18030787

	Coupling p plus n Field-Effect Transistor Circuits for Low Concentration Methane Gas Detection
	Zhou, Xinyuan 1,2; Yang, Liping1 ; Bian, Yuzhi 1,2; Ma, Xiang 1,2; Han, Ning 1,3; Chen, Yunfa 1,3
刊名	SENSORS
	2018-03-01
卷号	18 期号:3 页码:10
关键词	low concentration methane gas metal oxide gas sensors field effect transistors amplification effect
ISSN号	1424-8220
DOI	10.3390/s18030787
英文摘要	Nowadays, the detection of low concentration combustible methane gas has attracted great concern. In this paper, a coupling p+n field effect transistor (FET) amplification circuit is designed to detect methane gas. By optimizing the load resistance (R-L), the response to methane of the commercial MP-4 sensor can be magnified similar to 15 times using this coupling circuit. At the same time, it decreases the limit of detection (LOD) from several hundred ppm to similar to 10 ppm methane, with the apparent response of 7.0 +/- 0.2 and voltage signal of 1.1 +/- 0.1 V. This is promising for the detection of trace concentrations of methane gas to avoid an accidental explosion because its lower explosion limit (LEL) is similar to 5%. The mechanism of this coupling circuit is that the n-type FET firstly generates an output voltage (V-OUT) amplification process caused by the gate voltage-induced resistance change of the FET. Then, the p-type FET continues to amplify the signal based on the previous V-OUT amplification process.
资助项目	National Key R&D Program of China[2016YFC0207100] ; National Natural Science Foundation of China[51272253] ; Guangdong Innovative and Entrepreneurial Research Team Program[2014ZT05C146] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2014-C-01]
WOS关键词	CATALYTIC COMBUSTION ; SENSING PROPERTIES ; CARBON-DIOXIDE ; SENSORS ; OXIDE ; TEMPERATURE ; SENSITIVITY ; PERFORMANCE ; COMPOSITES ; FILMS
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000428805300108
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Guangdong Innovative and Entrepreneurial Research Team Program ; State Key Laboratory of Multiphase Complex Systems
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24914]
专题	中国科学院过程工程研究所
通讯作者	Han, Ning; Chen, Yunfa
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xinyuan,Yang, Liping,Bian, Yuzhi,et al. Coupling p plus n Field-Effect Transistor Circuits for Low Concentration Methane Gas Detection[J]. SENSORS,2018,18(3):10.
APA	Zhou, Xinyuan,Yang, Liping,Bian, Yuzhi,Ma, Xiang,Han, Ning,&Chen, Yunfa.(2018).Coupling p plus n Field-Effect Transistor Circuits for Low Concentration Methane Gas Detection.SENSORS,18(3),10.
MLA	Zhou, Xinyuan,et al."Coupling p plus n Field-Effect Transistor Circuits for Low Concentration Methane Gas Detection".SENSORS 18.3(2018):10.