Field emission behavior of carbon nanotube field emitters after high temperature thermal annealing

Yuning Sun; Dong Hoon Shin; Ki Nam Yun; Yeon Mo Hwang; Yenan Song; Guillaume Leti; Seok Gy Jeon; Jung Il Kim; Yahachi Saito; Cheol Jin Lee

doi:10.1063/1.4889896

Field emission behavior of carbon nanotube field emitters after high temperature thermal annealing

Yuning Sun, Dong Hoon Shin, Ki Nam Yun, Yeon Mo Hwang, Yenan Song, Guillaume Leti, Seok Gy Jeon, Jung Il Kim, Yahachi Saito, Cheol Jin Lee

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

The carbon nanotube (CNT) field emitters have been fabricated by attaching a CNT film on a graphite rod using graphite adhesive material. The CNT field emitters showed much improved field emission properties due to increasing crystallinity and decreasing defects in CNTs after the high temperature thermal annealing at 900 °C in vacuum ambient. The CNT field emitters showed the low turn-on electric field of 1.15 V/μm, the low threshold electric field of 1.62 V/μm, and the high emission current of 5.9 mA which corresponds to a current density of 8.5 A/cm². In addition, the CNT field emitters indicated the enhanced field emission properties due to the multi-stage effect when the length of the graphite rod increases. The CNT field emitter showed good field emission stability after the high temperature thermal annealing. The CNT field emitter revealed a focused electron beam spot without any focusing electrodes and also showed good field emission repeatability.

Original language	English
Article number	077110
Journal	AIP Advances
Volume	4
Issue number	7
DOIs	https://doi.org/10.1063/1.4889896
Publication status	Published - 2014 Jan 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.4889896

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title = "Field emission behavior of carbon nanotube field emitters after high temperature thermal annealing",

abstract = "The carbon nanotube (CNT) field emitters have been fabricated by attaching a CNT film on a graphite rod using graphite adhesive material. The CNT field emitters showed much improved field emission properties due to increasing crystallinity and decreasing defects in CNTs after the high temperature thermal annealing at 900 °C in vacuum ambient. The CNT field emitters showed the low turn-on electric field of 1.15 V/μm, the low threshold electric field of 1.62 V/μm, and the high emission current of 5.9 mA which corresponds to a current density of 8.5 A/cm2. In addition, the CNT field emitters indicated the enhanced field emission properties due to the multi-stage effect when the length of the graphite rod increases. The CNT field emitter showed good field emission stability after the high temperature thermal annealing. The CNT field emitter revealed a focused electron beam spot without any focusing electrodes and also showed good field emission repeatability.",

author = "Yuning Sun and Shin, {Dong Hoon} and Yun, {Ki Nam} and Hwang, {Yeon Mo} and Yenan Song and Guillaume Leti and Jeon, {Seok Gy} and Kim, {Jung Il} and Yahachi Saito and Lee, {Cheol Jin}",

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doi = "10.1063/1.4889896",

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T1 - Field emission behavior of carbon nanotube field emitters after high temperature thermal annealing

AU - Sun, Yuning

AU - Shin, Dong Hoon

AU - Yun, Ki Nam

AU - Hwang, Yeon Mo

AU - Song, Yenan

AU - Leti, Guillaume

AU - Jeon, Seok Gy

AU - Kim, Jung Il

AU - Saito, Yahachi

AU - Lee, Cheol Jin

PY - 2014/1/1

Y1 - 2014/1/1

N2 - The carbon nanotube (CNT) field emitters have been fabricated by attaching a CNT film on a graphite rod using graphite adhesive material. The CNT field emitters showed much improved field emission properties due to increasing crystallinity and decreasing defects in CNTs after the high temperature thermal annealing at 900 °C in vacuum ambient. The CNT field emitters showed the low turn-on electric field of 1.15 V/μm, the low threshold electric field of 1.62 V/μm, and the high emission current of 5.9 mA which corresponds to a current density of 8.5 A/cm2. In addition, the CNT field emitters indicated the enhanced field emission properties due to the multi-stage effect when the length of the graphite rod increases. The CNT field emitter showed good field emission stability after the high temperature thermal annealing. The CNT field emitter revealed a focused electron beam spot without any focusing electrodes and also showed good field emission repeatability.

AB - The carbon nanotube (CNT) field emitters have been fabricated by attaching a CNT film on a graphite rod using graphite adhesive material. The CNT field emitters showed much improved field emission properties due to increasing crystallinity and decreasing defects in CNTs after the high temperature thermal annealing at 900 °C in vacuum ambient. The CNT field emitters showed the low turn-on electric field of 1.15 V/μm, the low threshold electric field of 1.62 V/μm, and the high emission current of 5.9 mA which corresponds to a current density of 8.5 A/cm2. In addition, the CNT field emitters indicated the enhanced field emission properties due to the multi-stage effect when the length of the graphite rod increases. The CNT field emitter showed good field emission stability after the high temperature thermal annealing. The CNT field emitter revealed a focused electron beam spot without any focusing electrodes and also showed good field emission repeatability.

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Field emission behavior of carbon nanotube field emitters after high temperature thermal annealing

Abstract

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