Abstract
Silver nanorod arrays grew on the individual metallic silver particles after the thermal decomposition of the silver oxides. The formation of silver oxide came from the input of oxygen during sputtering. The subsequent growth of the Ag nanorods started from the single silver grain that originated from the decomposition caused by thermal reduction. This method for oxidation reduction growth used no catalysts and improved the interface effect for the lattice match. Photoluminescence of Ag nanorods was detected at 2.17 eV.
Highlights
One-dimensional (1D) metal nanostructures, including rods, wires, and tubes, have recently attracted interest and been applied to optical-electronic and sensing nanodevices due to their unique optical and conductive properties and thermal conductivity [1,2,3,4,5]
One-dimensional (1D) silver nanostructures are used as the substrates to detect surface enhanced Raman scattering (SERS) and surface plasmon resonance (SPR) and for enhancing the photoluminescence of the ZnO system [9,10,11,12,13,14]
This study has demonstrated an oxidation reduction growth (ORG) technique with mixed-gas sputtering to create Ag nanorod arrays without any chemical solutions or contamination from aqueous solution via oxide-assisted growth [29]
Summary
One-dimensional (1D) metal nanostructures, including rods, wires, and tubes, have recently attracted interest and been applied to optical-electronic and sensing nanodevices due to their unique optical and conductive properties and thermal conductivity [1,2,3,4,5]. A few literatures have demonstrated the formation of the various nanostructures by sputtering [20,21,22,23], and oxide-assisted growth has been developed for one-dimensional nanostructures in previous studies [24,25,26]. Oxidation reduction growth (ORG) of 1D metal structures prepared using a sputtering method has never been reported. This study has demonstrated an oxidation reduction growth (ORG) technique with mixed-gas sputtering to create Ag nanorod arrays without any chemical solutions or contamination from aqueous solution via oxide-assisted growth [29]. The ORG methodology is used to deposit an Ag buffer layer with silver oxide nanoclusters to obtain Ag. nanorods arrays using a two-step mixed gaseous process. The success of the technique provides support for the oxidation reduction growth (ORG) mechanism and proves suitable for fabrication of Ag nanorods in the semiconductor industry
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