Efficient surface-conducted field emission from ZnO nanotetrapods

被引：25
|
作者：
Li, Chi
Hou, Kai
Lei, Wei [1 ]
Zhang, Xiaobing
Wang, Baoping
Sun, X. W.
机构：
[1] Southeast Univ, Display R&D Ctr, Sch Elect Engn Sci, Nanjing 210096, Peoples R China
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 16期
关键词：
D O I：
10.1063/1.2798255
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report a surface-conducted field emission cathode using ZnO nanotetrapods as the surface conduction emitter. The dependences of electron emission efficiency on ZnO nanotetrapod film thickness and the spacing between adjacent electrodes of surface emitter were studied. A maximum electron emission efficiency of 60% was obtained for an optimal device with film thickness of 8 mu m and electrode spacing of 0.1 mm. A low turn-on voltage of about 100 V (corresponding to a field of 1 V/mu m) at an emission current density of 0.6 mA/cm(2) was obtained which is good enough for field emission displays. Good stability and uniformity were also demonstrated. (C) 2007 American Institute of Physics.
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页数：3
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