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Vol.42, No.6, 508 ~ 514, 2004
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| Title |
| Electronic Magnetic & Optical Materials ; Effects of Bonding Materials on Electric Field Enhancement and Field Emission Characteristics in Carbon Nanotube Cathodes |
| 신허영 H. Y. Shin , 김동희 D. H. Kim , 안병건 B. K. Ahn , 최우석 W. S. Choi , 정원섭 W. S. Chung , 정우창 U. C. Chung , 조영래 Y. R. Cho |
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| Abstract |
| Carbon nanotube cathodes with a high current density were investigated for use in flat panel displays. The field emission properties of cathodes fabricated by a screen-printing process were characterized in a high-vacuum chamber in the diode mode. The change in composition of the bonding materials comprise of a glass-frit and an Agpaste greatly affected the sheet resistance of the films after a heat treatment at 350℃. A higher volume fraction of insulating glass-frit in the bonding materials resulted in a larger value for the sheet resistance. However, the electric field enhancement factor(β) in the Fowler-Nordheim equation was not greatly affected by the composition changes of the bonding materials. Compared with the field enhancement factor, the current density was increased much more. Based on these findings, we conclude that the higher value of the current density was due to both an increased field enhancement factor and an increased number of carbon nanotubes protruding from the film surface. (Received May 10, 2004) |
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| Key Words |
| Carbon nanotube, Field enhancement, Field emission, Sheet resistance |
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