Abstract
We have developed a fast and highly sensitive gas sensor based on the Pd/V2O5 thin films for the low temperature detection of hydrogen in the range 2–500ppm in air. Sensor response, selectivity, and stability studies reveal excellent sensing of the thin films. The formation of vanadium bronze was studied by spectroscopic ellipsometry. The low temperature operation under ambient conditions and the wide range sensing indicates that these hydrophobic nanocrystalline thin films can be explored for optical as well as chemiresistive gas sensing applications.
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