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Title: Template-directed selective growth of ordered ZnO nanostructures on GaN by the hydrothermal method
Authors: Zhou, H.L.
Chen, A. 
Jian, L.K. 
Ooi, K.F.
Goh, G.K.L.
Zang, K.Y.
Chua, S.J.
Keywords: A2. Electron beam lithography
A2. Hydrothermal method
A2. Selective growth
Issue Date: 15-Jul-2008
Citation: Zhou, H.L., Chen, A., Jian, L.K., Ooi, K.F., Goh, G.K.L., Zang, K.Y., Chua, S.J. (2008-07-15). Template-directed selective growth of ordered ZnO nanostructures on GaN by the hydrothermal method. Journal of Crystal Growth 310 (15) : 3626-3629. ScholarBank@NUS Repository.
Abstract: Ordered ZnO nanostructures are synthesized through nanolithographically patterned templates on GaN by using the hydrothermal method. Due to the confined nucleation sites, ZnO nanostructures are selectively grown and replicate the geometry and dimension of the nanopatterns. The as-grown ZnO nanostructures have doughnut-like profiles, indicating preferred nucleation at the nanopattern edges driven by the surface energy minimization. Variation of ZnO nanostructure morphologies with varying nanopattern sizes is observed, and the growth mechanism is discussed. Room-temperature photoluminescence spectra show strong near band-edge emission at 381 nm. This method can be used to fabricate ordered ZnO nanostructures with tunable shape, size and morphology. © 2008 Elsevier B.V. All rights reserved.
Source Title: Journal of Crystal Growth
ISSN: 00220248
DOI: 10.1016/j.jcrysgro.2008.04.047
Appears in Collections:Staff Publications

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