Controllable Growth of Highly Ordered ZnO Nanorod Arrays via Inverted Self-Assembled Monolayer Template
Controllable Growth of Highly Ordered ZnO Nanorod Arrays via Inverted Self-Assembled Monolayer Template
复制标题
通过反向自组装单层模板可控生长高度有序的 ZnO 纳米棒阵列
DOI：
10.1021/am2010288
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发表时间：
2011-11-01
影响因子：
9.5
通讯作者：
Gao, H. L.
中科院分区：
文献类型：
--
作者：
Dong, J. J.;Zhang, X. W.;Gao, H. L.
本文提出了一种简单有效的方法，即利用聚苯乙烯微球自组装单分子膜衍生的TiO（2）环模板，通过水热法在GaN衬底上可控生长高度有序且垂直排列的ZnO纳米棒阵列。对于粒径为500 nm的聚苯乙烯微球，通过改变反应离子刻蚀时间和TiO（2）溶胶浓度，可以在50 ~ 400 nm范围内灵活调节TiO（2）环模板的尺寸。因此，单个ZnO纳米棒的直径可以在很宽的范围内进行潜在的调整。多种表征技术的结合表明，有序ZnO纳米棒的直径和高度均匀，排列完美，并沿沿着[0001]方向外延生长。本工作为制备高结晶质量的ZnO纳米棒阵列提供了一条新的途径。
This article presents a facile and effective approach to the controllable growth of highly ordered and vertically aligned ZnO nanorod arrays on the GaN substrate via a hydrothermal route by using the TiO(2) ring template deriving from the polystyrene microsphere self-assembled monolayer. The size of TiO(2) ring template can be flexibly tuned from 50 to 400 nm for the 500 nm polystyrene microspheres by varying the time of reactive ion etching and the concentration of TiO(2) sol. As a result, the diameter of the individual ZnO nanorods can be potentially tuned over a wide range. The combination of several characterization techniques has demonstrated that the ordered ZnO nanorods are highly uniform in diameter and height with perfect alignment and are epitaxially grown along [0001] direction. This work provides a novel and accessible route to prepare oriented and aligned ZnO nanorod arrays with high crystalline quality.