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个人信息Personal Information
副教授
硕士生导师
性别:女
毕业院校:北京大学
学位:博士
所在单位:集成电路学院
学科:微电子学与固体电子学
办公地点:大连理工大学开发区校区信息楼211-1
电子邮箱:hqzhang@dlut.edu.cn
Changing the Shape of ZnO Nanostructures by Controlling Oxygen Concentration: From Tetrapod-Like to Dandelion-Like Nanostructures
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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.