Enhanced field emission from ZnO nanorods via thermal annealing in oxygen

被引：184

作者：

Zhao, Q

Xu, XY

Song, XF

Zhang, XZ

Yu, DP ^{[1
]}

Li, CP

Guo, L

机构：

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

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

[3] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2166483

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To optimize the field emission behavior of the ZnO nanorods, postthermal annealing in different ambience was conducted. The field emission properties of the ZnO nanorods are considerably improved after annealing in oxygen and getting worse when annealing in air or ammonia. Photoluminescence and Raman spectroscopy were employed to elucidate the reason for such a significant improvement of the field emission when annealing in oxygen. Those detailed analyses suggested that oxygen annealing can reduce the oxygen vacancy concentration, improve the crystal quality, lower the work function, and increase the conductivity of the ZnO nanorods. Our work is important for applications of ZnO nanorods as a promising candidate in flat panel displays and high brightness electron sources.

引用

页码：1 / 3

页数：3

共 21 条

[1] Electron spin resonance study on high energy heavy ion irradiated conducting carbon films [J].