Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


J. Korean Phy. Soc. 2017; 71(6): 335-339

Published online September 29, 2017

Copyright © The Korean Physical Society.

Effect of Additives on the Properties of Printed ITO Sensors

Jieun Koo1,2, Seok-hwan Lee3, Sung-min Cho3, Jiho Chang1,3

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


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.

Keywords: Gas sensor, Methane, ITO, Ag, CNT, Sensitivity, Response, Additive