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Large-scale fabrication of highly sensitive SnO2 nanowire network gas sensors by single step vapor phase growth
- Authors
- Hwang, In-Sung; Kim, Sun-Jung; Choi, Joong-Ki; Jung, Jong-Jin; Yoo, Do Joon; Dong, Ki-Young; Ju, Byeong-Kwon; Lee, 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
- 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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