Field Emitters with Low Turn On Electric Field Based on Carbon Fibres

Author

Wang, Qilong ; Mu, Hui ; Zhang, Xiaobing ; Lei, Wei ; Wang, Jinchan ; Zhao, Hongping ; Huang, Chengxian ; Wang, Yuchun

Author_Institution

Dept. of Biomed. Eng., Southeast Univ.

fYear

0

fDate

0-0 0

Firstpage

335

Lastpage

336

Abstract

This paper reports the development and the operation of field emitters with low turn on electric field based on carbon fibres. Field emitters of vertical carbon fibres on silicon substrate were fabricated by the catalyst chemical vapor deposition. The diameter of the fibres is about 3~4 mum and the height is larger than 1 mm. After one aging process of 150 minutes, field emission measurements of carbon fibres were carried out in a vacuum chamber with pressure of 5.0times10^-4 Pa. The experimental results showed the turn on electric field is 1.5V/mum and the emission current density rises to 46.7mA/cm² under the field of 2.8 V/mum. The field emission performance and stability of carbon fibres depends strongly on the vacuum level during the process of the experiments. Damages on carbon fibres were also observed because of ion bombardment

Keywords

carbon fibres; chemical vapour deposition; field emission; silicon; 150 min; aging process; chemical vapor deposition; emission stability; field emitters; ion bombardment; silicon substrate; turn on electric field; vacuum chamber; vertical carbon fibres; Aging; Carbon dioxide; Chemical vapor deposition; Current density; Current measurement; Density measurement; Electric variables measurement; Pressure measurement; Silicon; Stability; CVD; Carbon fibres; Cold cathode; Field emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International

Conference_Location

Monterey, CA

Print_ISBN

1-4244-0108-9

Type

conf

DOI

10.1109/IVELEC.2006.1666320

Filename

1666320