TY - GEN
T1 - Electron Exchange Process Control between Silver Nanoparticles and Metal-Oxides for Highly Selective Gas Detection
AU - Kwon, Yeong Min
AU - Lim, Yeongjin
AU - Lee, Hye Jin
AU - Lee, Yun Sik
AU - Shin, Heungjoo
AU - Baik, Jeong Min
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/26
Y1 - 2018/12/26
N2 - A highly-selective gas detection strategy is described based on the continuous iteration method of various kinds of nanowires (WO3, TiO2, SnO2, CuO, and ZnO) growth at a wafer level and the catalytic functions of silver nanoparticles. The catalytic process occurring on the silver and the nanowires depended on the magnitude of barrier height at the interface. It determined the electron exchange rate across the interface and the resulting band bending was changed near the interface when it was exposed to gases, resulted in different gas responses among the nanowires. The sensor array with palladium and silver nanoparticles was tested for the ability to distinguish between the hydrogen, carbon monoxide, and nitric oxide with detection limits ranging from sub-ppm to ppm levels, enabled the gas responses to be separated into three classes using linear discriminant analysis.
AB - A highly-selective gas detection strategy is described based on the continuous iteration method of various kinds of nanowires (WO3, TiO2, SnO2, CuO, and ZnO) growth at a wafer level and the catalytic functions of silver nanoparticles. The catalytic process occurring on the silver and the nanowires depended on the magnitude of barrier height at the interface. It determined the electron exchange rate across the interface and the resulting band bending was changed near the interface when it was exposed to gases, resulted in different gas responses among the nanowires. The sensor array with palladium and silver nanoparticles was tested for the ability to distinguish between the hydrogen, carbon monoxide, and nitric oxide with detection limits ranging from sub-ppm to ppm levels, enabled the gas responses to be separated into three classes using linear discriminant analysis.
KW - Five types of nanowires
KW - High-selective gas detection
KW - Hydrothermally grown
KW - Selective catalytic activity of Ag
KW - Wafer-scale
UR - https://www.scopus.com/pages/publications/85060872588
U2 - 10.1109/ICSENS.2018.8589542
DO - 10.1109/ICSENS.2018.8589542
M3 - Conference contribution
AN - SCOPUS:85060872588
T3 - Proceedings of IEEE Sensors
BT - 2018 IEEE SENSORS, SENSORS 2018 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th IEEE SENSORS Conference, SENSORS 2018
Y2 - 28 October 2018 through 31 October 2018
ER -