Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 176, Issue -, Pages 103-109Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.08.029
Keywords
Nickel oxide; Nanocomposites; Gold nanoparticles; Hydrogen sensor
Funding
- Hellenic General Secretariat for Research and Technology
- Nano-structured organic-inorganic hybrid materials-synthesis, diagnostics and properties program of TPCI/NHRF [.2005SigmaE01330081]
- TPCI/NHRF
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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 (248 nm) and a Nd: YAG laser (355 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. (C) 2012 Elsevier B.V. All rights reserved.
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