A novel approach to improve the field emission characteristics of printed CNT films

被引：1
|
作者：
Zou, Rujia [1 ]
Xue, Shaolin [1 ]
Li, Dayong [1 ]
机构：
[1] Donghua Univ, Dept Appl Phys, Shanghai 201620, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2009年 / 7卷 / 02期
关键词：
CARBON NANOTUBES; EMITTERS; CATHODE;
D O I：
10.3788/COL20090702.0130
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel post-treatment method, including hard hairbrush and electrical treatment, is performed intentionally to improve the field emission capability and stability of screen-printed carbon nanotubes (CNTs). Compared with untreated films, the field emission properties of the treated ones are greatly enhanced. Scanning electron microscopy (SEM) and Raman spectrum studies reveal that field emission properties are enhanced by two factors. Firstly, the improved field emission properties of CNT films can be attributed to the more active CNT surface by removing the organic material cover on the CNTs. Secondly, the generation of a high density of structural defects and the lower resistance contact to the topside CNT emitters after treatment are all helpful to improving the field emission properties of the treated CNTs.
引用
收藏
页码：130 / 133
页数：4
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