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Gated carbon nanotube emitter with low driving voltage

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9 Author(s)
Chun Gyoo Lee ; Corporate R&D Center, Samsung SDI Co. Ltd, Yongin-City, South Korea ; Sang Jo Lee ; Sung Hee Cho ; Eung Joon Chi
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By approaching the counter electrode to the carbon nanotubes (CNT) emitter, remarkable reduction of the cathode operating voltage has been accomplished in the under-gate CNT cathode structure. The peak emission current density of 2.5 mA/cm2, which is sufficient for high brightness CNT field emission display, was obtained at the cathode-to-gate voltage of 57 V when the CNT-to-counter electrode gap was 2.2 μm. The gate current was less than 10% of the anode current. The CNT cathode with low driving voltage can help the cost-effective field emission display implemented.

Published in:

Electron Device Letters, IEEE  (Volume:25 ,  Issue: 9 )