Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
80412 | Solar Energy Materials and Solar Cells | 2009 | 5 Pages |
Abstract
We have used Pd–Pt alloy as the catalyst in the hydrogen sensor thin film. Palladium and platinum were co-sputtered on top of a tungsten oxide layer grown by reactive sputtering. Both the sensitivity and the durability were dramatically improved over the case of a palladium single-component catalyst. The fractional change in the optical absorption on exposure to 1% hydrogen gas was increased by a factor larger than 2, and the fractional change decreased only a little after more than 1000 cycles of repeated exposure to 1% hydrogen and air. Moreover, the sensor film exhibited good selectivity to other organic vapors.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Jae Young Shim, Jae Dong Lee, Jung Mo Jin, Hyeonsik Cheong, Se-Hee Lee,