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Large-scale fabrication of highly sensitive SnO2 nanowire network gas sensors by single step vapor phase growth

Authors
Hwang, In-SungKim, Sun-JungChoi, Joong-KiJung, Jong-JinYoo, Do JoonDong, Ki-YoungJu, Byeong-KwonLee, Jong-Heun
Issue Date
4월-2012
Publisher
ELSEVIER SCIENCE SA
Keywords
SnO2 nanowire; Gas sensors; Large-scale fabrication; NO2; C2H5OH
Citation
SENSORS AND ACTUATORS B-CHEMICAL, v.165, no.1, pp.97 - 103
Indexed
SCIE
SCOPUS
Journal Title
SENSORS AND ACTUATORS B-CHEMICAL
Volume
165
Number
1
Start Page
97
End Page
103
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/108785
DOI
10.1016/j.snb.2012.02.022
ISSN
0925-4005
Abstract
The SnO2 nanowire networks were grown on a laser-scribed Al2O3 substrate containing 16 sensor elements with Au electrodes and Pt heaters via a single step vapor phase reaction, and their gas sensing characteristics were studied. The sensor showed a high response to 5 ppm NO2 (R-g/R-a = 1909, R-g: resistance in gas, R-a: resistance in air) at the sensor temperature of 141 degrees C and high and selective responses to 100 ppm C2H5OH (R-a/R-g= 301.8-326.4) at 240 and 296 degrees C. which demonstrated that high performance SnO2 nanowire network gas sensors can be fabricated on a large scale through a facile and cost-effective route. (C) 2012 Elsevier B.V. All rights reserved.
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공과대학 (전기전자공학부)
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