Field electron emission properties of industrial graphite under technical vacuum conditions

Chepusov, A. S.; Komarskiy, A. A.; Korzhenevskiy, S. R.

doi:10.1016/j.vacuum.2021.110268

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…Moreover, cold electron devices could work at the high-frequency and wide-bandwidth regime. Vacuum devices based on cold electron sources can be further miniaturized and are lightweight and portable [4][5][6]. Also, the field emission electron source can achieve high current, high current density, low power consumption, and wide operating temperature range [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Chen,

Chang,

et al. 2023

J. Phys. D: Appl. Phys.

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High field emission of carbon nanotube (CNT) cold cathodes is realized by printing modified CNT paste on small-hole-patterned substrates. The field emission characteristics and stability of samples under DC continuous and pulse driving modes have been investigated. The results show that the maximum emission current of CNT emitters can be up to 45 mA at an electric field of 2100 V (7.0 V μm−1), corresponding to a high current density of 643 mA cm−2 under continuous mode. The cathodes also demonstrate stable electron emission without obvious attenuation. In pulse (10 μs and 200 Hz) mode, the peak current can reach 250 mA and the corresponding current density is 3.57 A cm−2 under an electric field of 14.0 V μm−1. The hole-patterned CNT cathode presents unique advantages in field emission current, stability and especially endurance of high electric field. This work makes it possible to fabricate highly efficient emission CNT cold electron sources, which have broad application prospects in vacuum electronic devices requiring both large current and high current density.

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Section: Introductionmentioning

confidence: 99%

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Chen,

Chang,

et al. 2023

J. Phys. D: Appl. Phys.

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“…[5][6][7][8][9][10][11][12] Among them, graphite is of particular interest due to its high electrical conductivity and crystallinity, and has been actively investigated as a field emitter. [13][14][15] Previous studies have reported field-emission properties from both industrial and nanoparticle graphite 13,14) as well as cone-shaped emitters fabricated from graphite using laser processing. 15) In this context, we have proposed a unique and simple field-emitter fabrication process called the sandblasting process.…”

mentioning

confidence: 99%

Field emission from sharp protrusions of graphite fabricated by sandblasting process

Yoshimoto

Ebina

Iwata

2023

Jpn. J. Appl. Phys.

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The sandblasting process, a novel method for fabricating field emitters, has been adapted to be used on graphite substrates. The sandblasted graphite substrate features numerous sharp protrusions on its surface that serve as effective field emitters. The threshold of the electric field was found to be 0.78 V/μm, and linear Fowler-Nordheim plots were achieved. These results demonstrate the potential of the sandblasting process for fabricating graphite-based emitters.

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Regulating the aspect ratio of bulk few-layer graphene to improve the field emission performance

Zhang,

Ding,

Liu

et al. 2024

Diamond and Related Materials

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Field electron emission properties of industrial graphite under technical vacuum conditions

Cited by 8 publications

References 14 publications

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Field emission from sharp protrusions of graphite fabricated by sandblasting process

Regulating the aspect ratio of bulk few-layer graphene to improve the field emission performance

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