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O2 and CO sensing of Ga2O3 multiple nanowire gas sensors
- Source :
-
Sensors & Actuators B: Chemical . Feb2008, Vol. 129 Issue 2, p666-670. 5p. - Publication Year :
- 2008
-
Abstract
- Abstract: Gallium oxide nanowires were synthesized by a chemical thermal evaporation method using gallium metal as a source material. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy characterizations indicate that the obtained nanowires are well-crystallized single phase monoclinic Ga2O3. Multiple nanowire gas sensors were fabricated by dispensing the Ga2O3 nanowires on an interdigitated Pt-electrode. The Ga2O3 nanowire gas sensors show reversible response to O2 and CO gases in a working temperature range of 100–500°C. A peak response is found at 300°C for O2 gas and the peak response appears at 200°C for CO gas. For both kinds of gases, the sensor response increases empirically with an increase of gas concentration. The results demonstrate the possibility of using the Ga2O3-based gas sensor at low working temperature field. [Copyright &y& Elsevier]
- Subjects :
- *NANOWIRES
*NANOSTRUCTURED materials
*DETECTORS
*ELECTRON microscopy
Subjects
Details
- Language :
- English
- ISSN :
- 09254005
- Volume :
- 129
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators B: Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 29959193
- Full Text :
- https://doi.org/10.1016/j.snb.2007.09.055