A comparative study of field emission properties of carbon nanotube films prepared by vacuum filtration and screen-printing

作者：Qian, Min; Feng, Tao^*; Wang, Kai; Ding, Hui; Chen, Yiwei; Sun, Zhuo

来源：Applied Surface Science, 2010, 256(14): 4642-4646.

DOI：10.1016/j.apsusc.2010.02.064

• Carbon nanotube
• Field emission
• Vacuum filtration
• Screen-printing

A comprehensive comparative study of electron field emission properties of carbon nanotube (CNT) films prepared by vacuum filtration and screen-printing was carried out. Field emission performance of vacuum filtered CNT films with different filtered CNT suspension volumes was systematically studied, and the optimum electron emission was obtained with a low turn on field of similar to 0.93 V/mu m (at 1 mu A/cm(2)) and a high field enhancement factor beta of similar to 9720. Comparing with screen-printed CNT films, vacuum filtered CNT films showed better electron emission performance, longer lifetime, and greater adhesive strength to substrates. This work reveals a potential use of vacuum filtered CNT films as field emission cathodes.

• 出版日期2010-5-1
• 单位华东师范大学