Abstract
A low temperature nano-structured Strontium Titanate (SrTiO3) thick film oxygen gas sensors were obtained by high-energy ball milling technique and thick-film screen-printing technique. SrTiO3 nano-sized powders of around 20nm were produced from commercial SrTiO3 and synthesized SrTiO3. The material micro-structural properties and sensor oxygen sensing properties were characterized using X-ray diffraction (XRD) and gas sensing measurements respectively. Experimental results show that the sensing property of the synthesized SrTiO3 sensors with an annealing temperature of 400°C is much better than the commercial SrTiO 3 sensors (both milled and not milled materials). Especially, their optimal operating temperature of around 40°C is the lowest reported value for such metal oxide semiconductor gas sensors ever achieved.
| Original language | English |
|---|---|
| Pages (from-to) | 1819-1822 |
| Number of pages | 4 |
| Journal | Ceramics International |
| Volume | 30 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2004 |
| Externally published | Yes |
| Event | 3rd Asian Meeting on Electroceramics - Singapore, Singapore Duration: Dec 7 2003 → Dec 11 2003 |
ASJC Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry
Keywords
- Low temperature
- Oxygen gas sensors
- SrTiO nano-sized powders