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Effects of position, thickness, and annealing temperature of Ag buffer layer on the shape of ZnO nanocrystals grown by a simple hydrothermal process

Published online by Cambridge University Press:  16 December 2013

Baojia Li ,
Lijing Huang ,
Ming Zhou  and
Naifei Ren
Baojia Li*
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China; and Jiangsu Provincial Key Laboratory of Center for Photon Manufacturing Science and Technology, Jiangsu University, Zhenjiang 212013, People's Republic of China
Lijing Huang
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China; and Jiangsu Provincial Key Laboratory of Center for Photon Manufacturing Science and Technology, Jiangsu University, Zhenjiang 212013, People's Republic of China
Ming Zhou
Affiliation:
The State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People's Republic of China
Naifei Ren
Affiliation:
Jiangsu Provincial Key Laboratory of Center for Photon Manufacturing Science and Technology, Jiangsu University, Zhenjiang 212013, People's Republic of China; and School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
*
a)Address all correspondence to this author. e-mail: bjia_li@126.com
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Abstract

In this paper, we report on the well-aligned zinc oxide (ZnO) nanorods synthesized on Ag buffer layer/glass substrate using a modified hydrothermal method, which adopts the strategy of Ag layer facing down. The effects of position, thickness, and annealing temperature of Ag layer on the shape of ZnO nanocrystals were systematically investigated. It was found that the diameter and length of ZnO nanorods decrease with the Ag layer height up to 12 mm, above which no obvious decrease was observed. Oppositely, the density, diameter, and length of ZnO rods all increase with an increase in the Ag layer thickness, except that the length becomes constant above a critical thickness of 60 nm. In addition, when the Ag layer annealing temperature increases from 300 to 400 °C, the nanorod density decreases, the diameter increases, and the length remains nearly invariable, respectively. Surprisingly, randomly inclined nanorods with two different diameters dispersedly coexist on the Ag layer that was annealed at 500 °C. This work may provide an effective approach for the shape control in ZnO-based applications.

Keywords

zinc oxide (ZnO)buffer layernanorodhydrothermal process
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 24 , 28 December 2013 , pp. 3384 - 3393
Copyright
Copyright © Materials Research Society 2013 

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References

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