Nitrogen oxide sensors based on thin films of BaSnO3

✍ Scribed by Uwe Lampe; Josef Gerblinger; Hans Meixner

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 135 KB
• Volume: 26
• Category: Article
• ISSN: 0925-4005
• DOI: 10.1016/0925-4005(94)01565-y

✦ Synopsis

A very promising sensor material to detect nitrogen oxide is (\mathrm{BaSnO}{3}). The mechanism of (\mathrm{NO}) sensitivity of this metal oxide is supposed to be a surface reaction process. Thus to get a high gas sensitivity the NO elementary sensor is realized as a thin film. The sensitivity of the (\mathrm{BaSnO}{3}) thin films to (\mathrm{NO}) is measured as a function of the temperature and the oxygen concentration. As the most important cross-sensitivities, the influence of humidity, methane, ammonia and CO on the sensor signal was examined. The NO sensitivity shows under dry conditions a maximum in the range (450-550{ }^{\circ} \mathrm{C}).