Home // International Journal On Advances in Systems and Measurements, volume 13, numbers 3 and 4, 2020 // View article

Effects of UV Irradiation on the Sensing Properties of Co-doped SnO2 Thin Film for Ethanol Detection

Authors:
Mikayel Aleksanyan
Artak Sayunts
Hayk Zakaryan
Vladimir Aroutiounian
Valeri Arakelyan
Gohar Shahnazaryan

Keywords: gas sensor; alcohol; UV radiation; room temperature; metal oxides; Nyquist plot

Abstract:
In this paper, a sputtering ceramic target based on SnO2 doped with 2 at.% Co was synthesized by solid-phase reaction method. A chemiresistive alcohol vapor sensor based on SnO2<Co> was manufactured by the high-frequency magnetron sputtering method. The alcohol sensing properties of the SnO2<Co> sensor under the ultraviolet (UV) illumination were examined at room temperature (RT). The UV-assisted alcohol sensor showed a sufficient response to low concentrations of alcohol vapor at RT. The Co-doped SnO2 sensor has also demonstrated a high sensitivity to alcohol vapors at elevated operating temperature. The impedance characteristics of the sensors have been also thoroughly studied. It is expected that in the future, Co doped SnO2 based sensitive thin films will be able to be utilized in highly sensitive, real-time alcohol vapor sensors.

Pages: 312 to 321

Copyright: Copyright (c) to authors, 2020. Used with permission.

Publication date: December 30, 2020

Published in: journal

ISSN: 1942-261x