Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7148932 | Sensors and Actuators B: Chemical | 2013 | 7 Pages |
Abstract
Nanocomposite NiO:Au thin films, formed by gold nanoparticles embedded in a nickel oxide matrix, have been grown by reactive pulsed laser deposition (R-PLD). Two actively synchronized nanosecond laser sources, a KrF excimer laser (248Â nm) and a Nd:YAG laser (355Â nm), were used for the simultaneous ablation of nickel and gold targets in oxygen ambient. The morphology, composition, and optical properties of the obtained nanocomposites were investigated and were found to correlate with the concentration of Au nanoparticles. Further, the NiO:Au nanocomposites have been tested as hydrogen sensors. Embedding Au nanoparticles into the NiO film matrix reduced the sensors operating temperature and improved their performance by orders of magnitude.
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Authors
I. Fasaki, M. Kandyla, M.G. Tsoutsouva, M. Kompitsas,