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论文类型：期刊论文

发表时间：2010-11-15

发表刊物：9th Chinese International Nanoscience and Technology Symposium

收录刊物：SCIE、EI、CPCI-S、Scopus

卷号：127

期号：1

页面范围：134-140

ISSN号：1058-4587

关键字：Nanostructures; semi-sealed quartz tube; growth mechanism; oxygen concentration

摘要：The tetrapod-like and two different kinds of dandelion-like structures had been controlledly synthesized on c-plane sapphire substrates by a simple chemical vapor deposition method. In the growing process, a semi-sealed quartz tube was utilized to create spatial variation of oxygen concentration. X-ray diffraction and scanning electron microscopy were employed to analyze crystal structures and morphologic characteristics of ZnO nanostructures synthesized in different regions. It is suggested that oxygen concentration is the critical experimental parameter for controlling and modifying the morphology during the nucleation and growth, which will lead to different nanostructures.