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Gas sensing properties of SnO2 nanowires on micro-heater

Authors
Hwang, In-SungLee, Eui-BokKim, Sun-JungChoi, Joong-KiCha, Jung-HoLee, Ho-JunJu, Byeong-KwonLee, Jong-Heun
Issue Date
20-6월-2011
Publisher
ELSEVIER SCIENCE SA
Keywords
SnO2; Gas sensors; Nanowires (NWs); Micro-heater; C2H5OH
Citation
SENSORS AND ACTUATORS B-CHEMICAL, v.154, no.2, pp.295 - 300
Indexed
SCIE
SCOPUS
Journal Title
SENSORS AND ACTUATORS B-CHEMICAL
Volume
154
Number
2
Start Page
295
End Page
300
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/112215
DOI
10.1016/j.snb.2009.11.012
ISSN
0925-4005
Abstract
The SnO2 nanowires (NWs) network gas sensors were fabricated on a micro-electrode and heater suspended in a cavity. The sensors showed selective detection to C2H5OH at a heater power during sensor operation as low as 30-40 mW. The gas response and response speed of the SnO2 NWs sensor to 100 ppm C2H5OH were 4.6- and 4.7-fold greater, respectively, than those of the SnO2 nanoparticles (NPs) sensor with the same electrode geometry. The reasons for these enhanced gas sensing characteristics are discussed in relation to the sensing materials and sensor structures. (C) 2009 Elsevier B.V. All rights reserved.
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공과대학 (전기전자공학부)
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