Efficient field emission properties of ZnO (core)/graphite (shell) nanowires

被引：6
|
作者：
Sameera, I. [1 ]
Bhatia, Ravi [1 ]
Prasad, V. [1 ]
机构：
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2012年 / 177卷 / 13期
关键词：
Nanostructures; Scanning and transmission electron microscopy; Field emission; ZINC-OXIDE; ARRAYS; CARBON; TEMPERATURE; FILMS; NANOTUBES; COMPOSITE; NANORODS; EMITTERS;
D O I：
10.1016/j.mseb.2012.05.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work the field emission studies of a new type of field emitter, zinc oxide (ZnO) core/graphitic (g-C) shell nanowires are presented. The nanowires are synthesized by chemical vapor deposition of zinc acetate at 1300 degrees C Scanning and transmission electron microscopy characterization confirm high aspect ratio and novel core-shell morphology of the nanowires. Raman spectrum of the nanowires mat represents the characteristic Raman modes from g-C shell as well as from the ZnO core. A low turn on field of 2.75 V/mu m and a high current density of 1.0 mA/cm(2) at 4.5 V/mu m for ZnO/g-C nanowires ensure the superior field emission behavior compared to the bare ZnO nanowires. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：1090 / 1093
页数：4
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