Optimized hydrogen sensing properties of nanocomposite NiO: Au thin films grown by dual pulsed laser deposition

SENSORS AND ACTUATORS B-CHEMICAL

卷:176

Article

Fasaki, I.¹  Kandyla, M.¹  Tsoutsouva, M. G.¹  Kompitsas, M.¹ 

[1] Natl Hellen Res Fdn, Inst Theoret & Phys Chem, GR-11635 Athens, Greece

关键词: Nickel oxide;    Nanocomposites;    Gold nanoparticles;    Hydrogen sensor;   

DOI  :  10.1016/j.snb.2012.08.029

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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