Effects of High-Humidity Aging on Platinum, Palladium, and Gold Loaded Tin Oxide—Volatile Organic Compound Sensors

Sensors

Toshio Itoh²  Ichiro Matsubara²  Masahiro Kadosaki¹  Yuichi Sakai¹  Woosuck Shin²  Noriya Izu² 

[1] Toyama Industrial Technology Center, 383 Takada, Toyama 930-0866, Japan; E-Mails:;National Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan; E-Mails:

关键词: gas sensor;    tin oxide;    noble metal loaded tin oxide;    T–VOC test gas;    high-humidity aging;   

DOI  :  10.3390/s100706513

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
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