Abstract
In this paper, we fabricated and evaluated the gas sensor for the detection of CO gas and NOx gas among the vehicle exhaust emission gasses. The SnO2 (tin dioxide) layer is used as the detection material, and the thin-film type and the nano-fiber type layers are deposited with various thicknesses using sputtering method and electro spinning method, respectively. The experiments are performed in the chamber where the gas concentration is controlled with mass flow controller. The fabricated devices are applied to the CO and NOx gas, where the device with the thinner SnO2 layer shows better sensitivity. The nano-fiber has the larger surface area, and the shorter response time and recovery time are obtained. From the experimental results, both types of gas sensors successfully detect CO and NOx gases, which can be applied to measure those gases from the vehicle emissions.
| Translated title of the contribution | Fabrication and Evaluation of the SnO2 Based Gas Sensor for CO and NOx Detection |
|---|---|
| Original language | Korean |
| Pages (from-to) | 515-523 |
| Number of pages | 9 |
| Journal | 한국자동차공학회 논문집 |
| Volume | 23 |
| Issue number | 5 |
| DOIs | |
| State | Published - Sep 2015 |