Controlled selective growth of ZnO nanorod arrays and their field emission properties

被引:99
作者
Ahsanulhaq, Q.
Kim, Jin-Hwan
Hahn, Yoon-Bong [1 ]
机构
[1] Chonbuk Natl Univ, Sch Semicond & Chem Engn, Jeonju 561756, South Korea
[2] Chonbuk Natl Univ, Ctr Future Energy Mat & Devices BK21, Jeonju 561756, South Korea
关键词
D O I
10.1088/0957-4484/18/48/485307
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Controlled, ordered arrays of ZnO nanorods having a high aspect ratio of similar to 30: 1 and diameter of similar to 50 nm were fabricated on silicon substrates by combining electron-beam lithography and simple solution growth techniques. This top-down and bottom-up hybrid approach resulted in excellent control of periodicity, location, and density of ZnO nanorod arrays on silicon substrates. The field emission measurements from the as-grown ZnO nanorod arrays showed a low turn-on field of similar to 2.85 V mu m(-1) and a high field-enhancement factor (beta) of similar to 1.68 x 10(3).
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页数:6
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