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Improvement of field emission from screen-printed carbon nanotubes by He/(N2,Ar) atmospheric pressure plasma treatment

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4 Author(s)
Kyung, S.J. ; Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Jangan-Gu, Chunchun-Dong 300, Suwon 440-746, South Korea ; Park, J.B. ; Lee, J.H. ; Yeom, G.Y.

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A screen-printed carbon nanotube (CNT) paste for applications to field emission emitters was treated with He, He/Ar, and He/N2 atmospheric pressure plasmas. The effect of the different plasma treatments on the field emission characteristics of the screen-printed CNTs was investigated. The atmospheric pressure plasma applied to the screen-printed CNT paste for 10 s resulted in a reduction in the turn-on electric field. In particular, the application of a He/N2 plasma treatment decreased the turn-on electric field from 3.13 to 1.29 Vm and increased the field enhancement factor from 737 to 2775 after the treatment. These results suggest that an adequate atmospheric pressure plasma treatment of screen-printed CNTs can be effective in enhancing the field emission properties.

Published in:

Journal of Applied Physics  (Volume:100 ,  Issue: 12 )