Development of a Carbon Nanotube Paste for the High-Performance Field Emitters by Using the Simple Ball-Milling Method

Seung Joon Ahn; Jae Woo Kim; Seong Joon Ahn; Dong Hwan Han; Ho Seob Kim; Yoon Ho Song

doi:10.4028/www.scientific.net/MSF.804.161

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HomeMaterials Science ForumMaterials Science Forum Vol. 804Development of a Carbon Nanotube Paste for the...

Development of a Carbon Nanotube Paste for the High-Performance Field Emitters by Using the Simple Ball-Milling Method

Abstract:

The carbon nanotube (CNT) paste was fabricated by a very simple method where the paste composition could be controlled precisely. We have fabricated several types of field emitters from the CNT paste mixture consisting of the thin multi-walled CNT, the nanosized inorganic fillers, the ethyl cellulose binder and the terpineol solvent. The field emission current density was found to be more than 100 mA/cm² at a field of 2.5 V/μm for the planar-type CNT emitter and ~5 A/cm² for the tip-type emitter, respectively. We also optimized the filler material in the paste to make the emitter reliable under the high-temperature conditions. The developed CNT paste had good reproducibility and the field emitters made of the paste showed excellent characteristics as the electron sources for the various applications.

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Materials Science Forum (Volume 804)

Pages:

161-164

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.804.161

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Online since:

October 2014

Authors:

Seung Joon Ahn, Jae Woo Kim, Seong Joon Ahn, Dong Hwan Han, Ho Seob Kim, Yoon Ho Song

Keywords:

Ball-Milling Method, Carbon Nanotube (CN), Field Emitter, Paste, X-Ray Tube

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