Efficient field emission from ZnO nanoneedle arrays

被引：531

作者：

Zhu, YW

Zhang, HZ

Sun, XC

Feng, SQ

Xu, J

Zhao, Q

Xiang, B

Wang, RM

Yu, DP ^{[1
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 01期

关键词：

D O I：

10.1063/1.1589166

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Well-aligned arrays of ZnO nanoneedles were fabricated using a simple vapor phase growth. The diameters of the nanoneedle tips are as small as several nanometers, which is highly in favor of the field emission. Field-emission measurements using the nanoneedle arrays as cathode showed emission current density as high as 2.4 mA/cm(2) under the field of 7 V/mum, and a very low turn-on field of 2.4 V/mum. Such a high emission current density is attributed to the high aspect ratio of the nanoneedles. The high emission current density, high stability, and low turn-on field make the ZnO nanoneedle arrays one of the promising candidates for field-emission displays. (C) 2003 American Institute of Physics.

引用

页码：144 / 146

页数：3

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