CAS OpenIR
Coupling p plus n Field-Effect Transistor Circuits for Low Concentration Methane Gas Detection
Zhou, Xinyuan1,2; Yang, Liping1; Bian, Yuzhi1,2; Ma, Xiang1,2; Han, Ning1,3; Chen, Yunfa1,3
2018-03-01
Source PublicationSENSORS
ISSN1424-8220
Volume18Issue:3Pages:10
AbstractNowadays, 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.
Keywordlow concentration methane gas metal oxide gas sensors field effect transistors amplification effect
DOI10.3390/s18030787
Language英语
WOS KeywordCATALYTIC COMBUSTION ; SENSING PROPERTIES ; CARBON-DIOXIDE ; SENSORS ; OXIDE ; TEMPERATURE ; SENSITIVITY ; PERFORMANCE ; COMPOSITES ; FILMS
Funding ProjectNational 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 Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
Funding OrganizationNational 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
WOS IDWOS:000428805300108
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24915
Collection中国科学院过程工程研究所
Corresponding AuthorHan, Ning; Chen, Yunfa
Affiliation1.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
Recommended Citation
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.
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