High intensity, pulsed electron beam emission from carbon nanotube cathodes

Liao, Qingliang; Zhang, Yue; Xia, Liansheng; Zuo-ning, Gao; Huang, Yunhua; Qi, Junjie; Chang, Yongqin; Zhang, Huang

doi:10.1016/j.carbon.2007.03.026

Cited by 22 publications

(11 citation statements)

References 23 publications

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“…To the fluctuation in the voltage curves, we think it was caused by the cathode plasma forming in the emission procedure. This opinion can be proved by the results reported in references [12,13]. The difference with their results is that the plasma-induced emission behavior of our sample is not the dominant mechanism.…”

Section: Characteristics Of Intense Pulsed Emissioncontrasting

confidence: 51%

“…The focus on field emission and its applications of most current research work was taken to direct current (DC) emission mode. Recently, the emission characteristics from transplanted CNT Films in intense pulsed emission mode were reported [12,13]. However, the report about the intense pulsed emission characteristics from directly grown CNT films has not been found yet.…”

Section: Introductionmentioning

confidence: 98%

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Intense pulsed field emission of carbon nanotube film grown on electroless plated nickel substrate by pyrolysis

Zeng

Xia

et al. 2011

Phys. Status Solidi C

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Nickel substrate layer was prepared by using electroless plating method. CNT film was directly grown on such substrate by pyrolysis of iron Phthalocyanine (FePc). The intense pulsed emission characteristics were measured with a diode structure. When the peak value of pulsed evenly applied electric field was set at ∼11.6 V/µm, the peak current and current density are ∼200 A and 10.2 A/cm2, respectively and the corresponding turn‐on field is ∼4.8 V/µm. The peak current and current density at a pulsed macro electric field with a peak value of ∼13.5 V/µm are ∼1253 A and 63.8 A/cm2 respectively, with a turn‐on field ∼1.8 V/µm. According to the wave curves, the emission behavior should be considered as intense pulsed field emission. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Characteristics Of Intense Pulsed Emissioncontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 98%

Intense pulsed field emission of carbon nanotube film grown on electroless plated nickel substrate by pyrolysis

Zeng

Xia

et al. 2011

Phys. Status Solidi C

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“…The pristine CNTs were treated at 1 500 ℃ under 100 µPa. The high-temperature vacuum process efficiently removed residual metal catalysts and enhanced the graphitization of the MWNTs [11,12] . The powder metallurgy procedures involved blending, compacting and sintering.…”

Section: Methodsmentioning

confidence: 99%

Field emission from carbon nanotube/tin composite

Zhao

Zhang

2009

J. Shanghai Jiaotong Univ. (Sci.)

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Powder metallurgy was used to fabricate carbon nanotube (CNT) field emission cathodes. CNTs and tin (Sn) powder were blended, compacted and sintered. After polishing and etching, CNTs were exposed and protruded from the metal surface. CNTs were embedded into the Sn matrix, which acted as stable field emitters. The J-E curves show excellent field emission properties, such as low turn-on field of 2.8 V/µm, high emission current density and good current stability.

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“…The pristine CNTs were first treated at the temperature of 1500 8C under the vacuum of 10 À4 Pa. The hightemperature vacuum process efficiently removed residual metal catalysts and enhanced the graphitization of the CNTs [16]. Then, the CNTs were treated with mixed acid (HNO 3 Ultrasonic nanowelding was used to improve the field emission properties of carbon nanotube (CNT) cathodes.…”

Section: Methodsmentioning

confidence: 99%