Nano Archive

Growth of homoepitaxial ZnO film on ZnO nanorods and light emitting diode applications

Park, Sun-Hong and Kim, Seon-Hyo and Han, Sang-Wook (2007) Growth of homoepitaxial ZnO film on ZnO nanorods and light emitting diode applications. Nanotechnology, 18 (5). 055608 (6pp).

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Official URL: http://stacks.iop.org/0957-4484/18/055608

Abstract

Vertically aligned ZnO nanorod arrays with a diameter of 40-150~nm were fabricated on Al2O3 substrates with and without GaN interlayers, and consequently covered with a ZnO film in situ by a catalyst-free metal-organic vapour phase epitaxy method. X-ray diffraction and transmission electron microscopy measurements demonstrated that the ZnO film/nanorods hybrid structures had a well-ordered wurtzite structure with no lattice mismatch between the film and nanorods, and that the film was homoepitaxially grown horizontally as well as vertically on the pre-grown nanorods. From n-ZnO film/nanorods/p-GaN heterojunctions, we observed a blue light emission with a wavelength of about 440~nm.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
ID Code:287
Deposited By:Lesley Tobin
Deposited On:27 Nov 2008 15:34
Last Modified:09 Feb 2009 15:48

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