Ultrafine ZnO nanowires grown on patternable Pd catalyst and their source-energy dependent photoluminescence

Bhuvana, T. ; Kulkarni, G. U. (2011) Ultrafine ZnO nanowires grown on patternable Pd catalyst and their source-energy dependent photoluminescence International Journal of Nanoscience, 10 . pp. 699-705. ISSN 0219-581X

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Official URL: http://www.worldscientific.com/doi/abs/10.1142/S02...

Related URL: http://dx.doi.org/10.1142/S0219581X11008939

Abstract

Patterned arrays of ZnO nanostructures have been obtained from a solution based method using Pd nanoparticles as catalyst. The catalyst nanoparticles were patterned using a direct-write e-beam lithography process. Within 10 minutes in an aqueous solution of zinc nitrate and triethyamine borane at 80°C, fine nanowires of ZnO with diameter around 10 nm were produced on patterned Pd nanoparticles. Longer duration in the precursor solution led to formation of ZnO fibril-like structures. Photoluminescence measurements revealed that the nanostructures exhibited a blue shift for the emission peak at 390 nm, when the excitation energy was increased, unlike bulk ZnO. This is attributed to the discrete defect states present in confined nanostructures.

Item Type:Article
Source:Copyright of this article belongs to World Scientific Publishing.
Keywords:Electron Beam Lithography; Pd Catalyst; Nanowires; Photoluminescence; Zinc Oxide
ID Code:102797
Deposited On:04 Mar 2017 13:05
Last Modified:04 Mar 2017 13:05

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