Growth and Characterization of Vertically Aligned Nonpolar [11虆00] Orientation ZnO Nanostructures on (100) 纬-LiAlO2 Substrate

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• 作者：Chenlong Chen ; Yan-Ting Lan ; Mitch M.C. Chou ; Da-Ren Hang ; Tao Yan ; He Feng ; Chun-Yu Lee ; Shih-Yu Chang ; Chu-An Li
• 刊名：Crystal Growth & Design
• 出版年：2012
• 出版时间：December 5, 2012
• 年：2012
• 卷：12
• 期：12
• 页码：6208-6214
• 全文大小：503K
• 年卷期：v.12,no.12(December 5, 2012)
• ISSN：1528-7505

文摘

In this work, we demonstrate the capability of controlling the crystallographic orientation of ZnO nanostructure arrays grown along nonpolar [11虆00] orientation. The Au catalyst was used to initiate and guide the growth of ZnO nanostructures on (100) 纬-LiAlO₂ substrate. The morphology, structure, and optical properties of the as-synthesized ZnO nanostructures were characterized by field emission scanning electron microscopy, X-ray diffraction, field emission transmission electron microscope, monochromatic cathodoluminescence image, and photoluminescence spectroscopy. The ZnO nanostructure arrays exhibited special shape and were aligned vertically on the (100) 纬-LiAlO₂ substrate. A cooperative of Au-catalyzed VLS vertebral column growth along [11虆00] orientation, zinc-self-catalyzed VLS growth along [0001], and ZnO VS lateral expansion growth process was proposed for the special ZnO nanostructures.