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2 results on '"Su Bong Hong"'

1. Gated Carbon Nanotube Emitter With Low Driving Voltage

Author

Su Bong Hong, Byung Gon Lee, Deok Hyeon Choe, Sang Hyuck Ahn, Sang Ho Jeon, Eung Joon Chi, Sung-Hee Cho, Sang Jo Lee, and Chun Gyoo Lee

Subjects
Auxiliary electrode, Materials science, Field emission display, business.industry, Nanotechnology, Cathode, Electronic, Optical and Magnetic Materials, Anode, law.invention, Field electron emission, law, Optoelectronics, Electrical and Electronic Engineering, business, Current density, Low voltage, Common emitter
Abstract

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/cm/sup 2/, 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 /spl mu/m. 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
2004

2. Low voltage driven carbon nanotube field emission cathode

Author

Chun Gyoo Lee, Byung Gon Lee, Deok Hyeon Choe, Eung Joon Chi, Sung-Hee Cho, Su Bong Hong, Sang Jo Lee, Sang Hyuck Ahn, and Sang Ho Jeon

Subjects
Materials science, business.industry, Scanning electron microscope, Nanotechnology, Hot cathode, Cathode, law.invention, Anode, Field electron emission, law, Electrode, Optoelectronics, Vacuum chamber, Electrical measurements, business
Abstract

An under-gate CNT cathode structure was fabricated and characterized. The purpose of this work is to fabricate a cathode with micron-sized CNT-to-counter electrode gap, d/sub G/. Scanning electron microscopy was used to characterize the fabricated cathode. Electrical measurements were made in a vacuum chamber. It was found that cathode-to-gate voltage decreases with decreasing d/sub G/. It was also observed that emitting layer made of high purity CNT powder offers higher performance in terms of emission site density.

Published
2004

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