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Fabrication of field-emission cathode ray tube with a unique nanostructure carbon electron emitter

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8 Author(s)
Wang, H.X. ; Dilight-Japan Co., Ltd., 2-6-25 Koda, Ikeda, Osaka 563-0043, Japan ; Jiang, N. ; Hiraki, H. ; Harada, Y.
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A field-emission cathode ray tube (FE-CRT) has been fabricated using a unique nanostructure carbon electron emitter called carbon nanometer electron exit (CNX) which has been developed on stainless rod substrate with a special plasma chemical vapor deposition technique. Field emission from CNX has been investigated in a vacuum of 3×10-6 Torr by using a diode configuration with a 5 mm diameter anode and an A-K gap of 1 mm, which shows that a emission current density of 1 mA/cm2 can be obtained at an electrical field of 0.95 Vm. When the electrical field was increased to 2.4 Vm, an emission current density of 1.568 A/cm2 was observed. Scanning electron microscopy images and micro-Raman spectrum were used to characterize the CNX film. The design of the emission system of electronic gun was optimized by simulating the equal-potential lines using a commercial software. Finally, a 4.5 in. FE-CRT with a specially designed emission system has been fabricated.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:26 ,  Issue: 2 )

Date of Publication:

Mar 2008

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