Density-controlled, solution-based growth of ZnO nanorod arrays via layer-by-layer polymer thin films for enhanced field emission

被引：39

作者：

Weintraub, Benjamin ^{[1
]}

Chang, Sehoon ^{[2
]}

Singamaneni, Srikanth ^{[2
]}

Han, Won Hee ^{[3
]}

Choi, Young Jin ^{[4
]}

Bae, Joonho ^{[1
]}

Kirkham, Melanie ^{[1
]}

Tsukruk, Vladimir V. ^{[1
,2
]}

Deng, Yulin ^{[5
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Sch Polymer Text & Fiber Engn, Atlanta, GA 30332 USA

[3] Myongji Univ, Dept Phys, Yongin 449728, Gyeonggi, South Korea

[4] Myongji Univ, Dept Nano Sci & Engn, Yongin 449728, Gyeonggi, South Korea

[5] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

来源：

NANOTECHNOLOGY | 2008年 / 19卷 / 43期

关键词：

D O I：

10.1088/0957-4484/19/43/435302

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A simple, scalable, and cost-effective technique for controlling the growth density of ZnO nanorod arrays based on a layer-by-layer polyelectrolyte polymer film is demonstrated. The ZnO nanorods were synthesized using a low temperature (T = 90 degrees C), solution-based method. The density-control technique utilizes a polymer thin film pre-coated on the substrate to control the mass transport of the reactant to the substrate. The density-controlled arrays were investigated as potential field emission candidates. The field emission results revealed that an emitter density of 7 nanorods mu m(-2) and a tapered nanorod morphology generated a high field enhancement factor of 5884. This novel technique shows promise for applications in flat panel display technology.

引用

页数：6

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