Free-standing ZnO-CuO composite nanowire array films and their gas sensing properties

Date
2011-07-19
Advisor
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Source Title
Nanotechnology
Print ISSN
0957-4484
Electronic ISSN
Publisher
IOP Publishing
Volume
22
Issue
32
Pages
325704-1 - 325704-7
Language
English
Type
Article
Journal Title
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Abstract

A modified hydrothermal method was developed to synthesize ZnO-CuO composite nanostructures. A free-standing film made of ZnO-CuO nanostructures was assembled on the surface of the hydrothermal solution with a smooth surface on one side and a spherical surface on the other side. The structure, growth mechanism and the optical properties of the composite nanostructures were studied. Structural characterizations indicate that the composite nanostructure mainly consisted of two single-crystal phases of CuO and ZnO. The sensitivity for CO gas detection was significantly improved for the composite CuO-ZnO nanostructure film. This method offers a possible route for the fabrication of free-standing nanostructure films of different functional composite oxides.

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Keywords
Thin-films, CuO/znO heterocontact, Optical-properties, Raman-scattering, Field-emission, Co, Growth, Nanoparticles, Luminescence, Sensitivity
Citation
Published Version (Please cite this version)