P1&amp;#x2013;30: CNT field emitters made by a filtration-transfer method

Shin, Dong Hoon; Song, Yenan; Sun, Yuning; Lee, Ji Yong; Kim, Bawl; Shin, Ji Hong; Jung, Sung-Weon; Lee, Cheol Jin

doi:10.1109/ivnc.2010.5563166

Cited by 1 publication

(1 citation statement)

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“…CNT field emitters have been fabricated by various methods, such as direct growth of CNTs at a high temperature, screen-printing of CNT pastes, and electrophoretic deposition or vacuum filtration of CNT solutions [12][13][14][15]. Among these methods, screen-printing has been extensively studied and adopted for mass production due to its simple and costeffective properties and its large-area compatibility.…”

Section: Introductionmentioning

confidence: 99%

Highly reliable field electron emitters produced from reproducible damage-free carbon nanotube composite pastes with optimal inorganic fillers

Kim¹,

Jeong²,

Kang³

et al. 2014

Nanotechnology

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Highly reliable field electron emitters were developed using a formulation for reproducible damage-free carbon nanotube (CNT) composite pastes with optimal inorganic fillers and a ball-milling method. We carefully controlled the ball-milling sequence and time to avoid any damage to the CNTs, which incorporated fillers that were fully dispersed as paste constituents. The field electron emitters fabricated by printing the CNT pastes were found to exhibit almost perfect adhesion of the CNT emitters to the cathode, along with good uniformity and reproducibility. A high field enhancement factor of around 10,000 was achieved from the CNT field emitters developed. By selecting nano-sized metal alloys and oxides and using the same formulation sequence, we also developed reliable field emitters that could survive high-temperature post processing. These field emitters had high durability to post vacuum annealing at 950 °C, guaranteeing survival of the brazing process used in the sealing of field emission x-ray tubes. We evaluated the field emitters in a triode configuration in the harsh environment of a tiny vacuum-sealed vessel and observed very reliable operation for 30 h at a high current density of 350 mA cm(-2). The CNT pastes and related field emitters that were developed could be usefully applied in reliable field emission devices.

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Section: Introductionmentioning

confidence: 99%