Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 42, Issue 9, Pages 2285-2288Publisher
ELSEVIER
DOI: 10.1016/j.physe.2010.05.005
Keywords
ZnO; Nanorod; Growth mechanism; Diffusion-induced; VLS
Funding
- MKE (The Ministry of Knowledge Economy), Korea under the ITRC (Information Technology Research Center) [NIPA-2010-C1090-1021-0015]
- MKE [2008-E-EL-02-P-02-0-000-2008]
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We studied a kinetic model of the ZnO nanorod (NR) growth that occurs via vapor phase transportation (VPT). The mechanism of ZnO NR growth was discussed in terms of the length-to-diameter (L-D) relationship of NRs, and it was confirmed by varying both the type of catalyst and source material used. Both theoretical calculations and experimental data indicated that elongation of NRs is primarily determined by diffusion of the absorbed atoms (adatoms) within a nominal migration length on the surface, which is not considered in the simple vapor-liquid-solid model. (C) 2010 Elsevier B.V. All rights reserved.
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