| 초록 |
Pt nanoparticle decorated ZnSnO3 ternary nanowires are synthesized in this study to fabricate high sensitive and high selective ethanol sensor. To improve hydrogen sensing properties using this nanowire sensor, Pt nanoparticles are decorated on surface of nanowire body. ZnSnO3 nanowires are synthesized by VLS mechanism, and Pt nanoparticles are decorated by sputtering and thermal annealing process. Hydrogen gas is detected in room temperature using this sensor under UV irradiation. Since hydrogen sensing properties of this sensor is not good in room temperature enough to utilized to commercial purpose, 365 nm UV is irradiated to this sensor to activate this sensor. Hydrogen sensing properties of Pt nanoparticle decorated ZnSnO3 nanowire sensor is improved approximately 7.44 times as UV is irradiated to this sensor. The response of this sensor is shown 58.21 as 1000 ppm hydrogen gas is exposed to sensor in room temperature. In this study, hydrogen sensing properties of Pt nanoparticle decorated ZnSnO3 nanowire sensor is examined, and its sensing mechanism and role of UV iradation are also discussed. |
