Facile, low temperature (≤;100 °C) growth of vertically aligned ZnO nanorods over anamorphous or disordered surface

被引：3
作者：
Brahma, Sanjaya [1 ,2 ]
Lo, Kuang-Yao Lo [1 ]
Shivashankar, S. A. [2 ,3 ]
机构：
[1] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan
[2] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, India
[3] Indian Inst Sci, Ctr Nano Sci & Engn, Bangalore 560012, India
来源：
MATERIALS LETTERS | 2015年 / 140卷
关键词：
Thick films; Electron microscopy; Luminescence; Raman; Texture;
D O I：
10.1016/j.matlet.2014.11.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report single step growth of c-axis oriented, high density ZnO nanorods on an amorphous surface, such as poly (methyl-methacrylate) [PMMA] coated Si (1 0 0) substrate. The growth is carried out in liquid medium at low growth temperature (<= 100 degrees C), without the use of any seed layer. It takes 5 min to obtain ZnO coatings comprising of well aligned ZnO nanorods. The as-prepared ZnO coatings have a significantly high density of nucleation (2*10(9)/cm(2)), and excellent structure quality. A novel growth mechanism is proposed, where the initial nucleation and growth of ZnO is through the incorporation of the ZnO nuclei into the microreliefs of PMMA. The strong orientation is ascribed to the minimization of surface energy at the substrate film interface. A comparative study is carried out by using acrylic sheet, and Si (1 0 0) substrate.
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页码：177 / 179
页数：3
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