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Improved Field Emission by Liquid Elastomer Modification of Screen-Printed CNT Film Morphology  

Lee, Hyeon-Jae (Display and Nanosystem Lab., College of Engineering, Korea University)
Lee, Yang-Doo (Display and Nanosystem Lab., College of Engineering, Korea University)
Cho, Woo-Sung (Display and Nanosystem Lab., College of Engineering, Korea University)
Kim, Jai-Kyeong (Korea Institute of Science and Technology)
Lee, Yun-Hi (Department of physics, Korea University)
Hwang, Sung-Woo (School of Electrical Engineering, Korea University)
Ju, Byeong-Kwon (Display and Nanosystem Lab., College of Engineering, Korea University)
Publication Information
Journal of Information Display / v.7, no.2, 2006 , pp. 16-21 More about this Journal
Abstract
The effect of improvement on the surface morphology of screen-printed carbon nanotube (CND) films was studied by using the optically clear poly-dimethylsiloxane (PDMS) elastomer for surface treatment. After the PDMS activation treatment was applied to the diode-type CNT cathode, the entangled carbon nanotube (CNT) bundles were broken up into individual free standing nanotubes to remarkably improve the field-emission characteristics over the as-deposited CNT film. Also, the cathode film morphology of a top gated triode-type structure can be treated by using the proposed surface treatment technique, which is a low-cost process, simple process. The relative uniform emission image showed high brightness with a high anode current. This result shows the possibility of using this technique for surface treatment of large-size field emission displays (FEDs) in the future.
Keywords
field emission; carbon nanotube; surface treatment; FED; screen printing;
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