Author: Itoh Toshio Matsubara Ichiro Kadosaki Masahiro Sakai Yuichi Shin Woosuck Izu Noriya Nishibori Maiko
Publisher: MDPI
E-ISSN: 1424-8220|10|7|6513-6521
ISSN: 1424-8220
Source: Sensors, Vol.10, Iss.7, 2010-07, pp. : 6513-6521
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Abstract
This study is an investigation of high-humidity aging effects on the total volatile organic compound (T–VOC) gas-sensing properties of platinum, palladium, and gold-loaded tin oxide (Pt,Pd,Au/SnO2) thick films. The sensor responses of the high-humidity aged Pt,Pd,Au/SnO2, a non-aged Pt,Pd,Au/SnO2, and a high-humidity aged Pt/SnO2 to T–VOC test gas have been measured. The high-humidity aging is an effective treatment for resistance to humidity change for the Pt,Pd,Au/SnO2 but not effective for the Pt/SnO2. The mechanism of the high-humidity aging effects is discussed based on the change of surface state of the SnO2 particles.
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