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Growth and Characterization of ZnO Nanowires

Published online by Cambridge University Press:  15 February 2011

Jason B. Baxter ,
Ron E.M.W. Bessems  and
Eray S. Aydil
Jason B. Baxter
Affiliation:
Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, U.S.A.
Ron E.M.W. Bessems
Affiliation:
Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, U.S.A.
Eray S. Aydil
Affiliation:
Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, U.S.A.
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Abstract

Single crystal ZnO nanowires were grown by chemical vapor deposition using monodisperse 5 nm or 20 nm diameter gold nanoparticle catalysts to control the nanowire diameter and location. The nanowires reach several microns in length and grow only from the gold nanoparticles. The nanowires have narrowly dispersed diameters, albeit significantly larger than the diameter of the gold particles used for catalyzing the growth. The nanowires grow in the [ 0 1 10 ] or [ 1 1 10 ] directions normal to the lowest energy planes in ZnO. ZnO nanowires emit in the near ultraviolet region of the electromagnetic spectrum upon excitation with highenergy photons or electrons. Electron diffraction and absence of luminescence associated with oxygen vacancies indicate high quality crystalline ZnO nanowires. Cathodoluminescence e mission along the entire length of the wire is consistent with a lack of non-radiative recombination sites associated with defects, lending further support for the high quality of these nanowires.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 776: Symposium Q – Unconventional Approaches to Nanostructures with Applications in Electronics, Photonics, Information Storage and Sensing , 2003 , Q7.9
Copyright
Copyright © Materials Research Society 2003

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