Effect of Additives on the Properties of Printed ITO Sensors
J. Korean Phy. Soc. 2017; 71: 335~339
Published online September 29, 2017 © 2017 The Korean Physical Society.


1Department of Electronic Material Engineering, Korea Maritime and Ocean University, Busan 49112, Korea
2International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Ibarak 305-0047, Japan

3Department of Convergence Study on the Ocean Science and Technology, Korea Maritime and Ocean University, Busan 49112, Korea

Correspondence to: Jiho Chang
Received June 9, 2017
Abstract
The effects of additives on the methane gas sensing performance of printed indium tin oxide (ITO) sensor have been investigated. Room temperature sensing has been achieved under the methane flow of 100 ppm. Sensitivity and response speed of the printed ITO sensor has been greatly improved. The most advanced performance has been achieved from the ITO+(Ag, CNT) sensor. Ag and CNT co-incorporation results in 652-times large sensitivity and 88% fast response time in compare to the pure ITO sensor under the same test conditions.
PACS numbers: 73.63.-b, 81.07.-b
Keywords: Gas sensor, Methane, ITO, Ag, CNT, Sensitivity, Response, Additive


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