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Effects of Surface Modification on the Recovery Time and Stability of Nanostructured Tin Oxiile Thick Films Gas Sensors
نویسنده
Vaezi M. R.
منبع
International Journal Of Engineering - 2007 - دوره : 20 - شماره : 3 - صفحه:275 -282
فایل تمام متن
چکیده
Along with high sensitivity in detecting gas. the response and recovery times ofsemiconductor gas sensors arc of considerable importance for real life applications. in 1110st cases. therecovery time is more than the response time. at the saine time, water vapor present in the ambient, ischernisorbed on the tin oxide, 5002 surface and the water molecules dissociate into hydroxyl species,which act as electron donors. in this research, we find that if the interference of absorbed moisturecan be reduced by surface treatment with thiourea diluted solution. the recovery time and stability oftin oxide sensors improves, which makes them suitable in real life applications.
کلیدواژه
Thick Film Gas Sensors; Thiourea: Tin Oxide: Sonochemical
آدرس
Materials And Energy Research Center (Merc), Deparl1nent Ofnew Materials, ایران
پست الکترونیکی
vaezi9016@yahoo.com
Authors
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