2.3.3 H2 Sensing Properties of Diode-type Sensors Fabricated with Anodized TiO2 Films Equipped with Polymer Coated Pd-Pt Electrodes

Go Yamamoto, Katsuhide Matsuo, Takeo Hyodo & Yasuhiro Shimizu
Diode-type gas sensors have been fabricated by employing anodized TiO2 films equipped with the Pd-Pt electrodes (Pd-Pt/TiO2) coated with a polytetrafluoroethylene (PTFE), polyvinyl alcohol (PVA) or polyimide (PI) film (P-n/Pd-Pt/TiO2 (P: PTFE, PVA or PI, n: polymer concentration of coating solution (wt%))), and their H2 sensing properties have been investigated under dry and wet air as well as N2 atmospheres. The coating of a relatively-thin polymer film, except for PTFE, on the electrodes likely enhanced...