Heat-treatment process for effectively enhancing field emission characteristics of CNTs/CNFs cathode

Ping Sheng Guo; Zhuo Sun; Zhi Hao Zheng

Heat-treatment process for effectively enhancing field emission characteristics of CNTs/CNFs cathode

Ping Sheng Guo^*
, Zhuo Sun
, Zhi Hao Zheng

^*Corresponding author for this work

School of Physics and Electronic Science

East China Normal University

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

6 Scopus citations

Abstract

A novel post-treatment method is reported to improve the field emission characteristics of screen-printed carbon nanotubes/nanofibers (CNTs/CNFs) cathodes. After treated at the temperature of 500°C in H₂ and C₂H₂ gas for 20 min, the CNTs/CNFs cathodes exhibit much better field emission properties than those untreated. After the treatment, the emission current increases from 0.02 mA/cm² to 0.50 mA/cm² at 3.9 V/μm with a decrease in the turn-on field from 2.4 V to 1.8 V, and the emission site density is increased by almost four order of number. The enhanced field emission of treated CNTs/ CNFs cathodes is attributed to the appearance of a large number of exposed CNTs/CNFs caused by heat treatment. This surface morphology is very favorable for the electron field emission.

Original language	English
Pages (from-to)	681-684
Number of pages	4
Journal	Guangdianzi Jiguang/Journal of Optoelectronics Laser
Volume	17
Issue number	6
State	Published - Jun 2006

Keywords

Carbon nanotubes/nanofibers (CNTs/CNFs)
Field emission
Post-treatment
Screen-printing

Cite this

@article{5fe43f09d2c146428fe180172ffe8516,

title = "Heat-treatment process for effectively enhancing field emission characteristics of CNTs/CNFs cathode",

abstract = "A novel post-treatment method is reported to improve the field emission characteristics of screen-printed carbon nanotubes/nanofibers (CNTs/CNFs) cathodes. After treated at the temperature of 500°C in H2 and C2H2 gas for 20 min, the CNTs/CNFs cathodes exhibit much better field emission properties than those untreated. After the treatment, the emission current increases from 0.02 mA/cm2 to 0.50 mA/cm2 at 3.9 V/μm with a decrease in the turn-on field from 2.4 V to 1.8 V, and the emission site density is increased by almost four order of number. The enhanced field emission of treated CNTs/ CNFs cathodes is attributed to the appearance of a large number of exposed CNTs/CNFs caused by heat treatment. This surface morphology is very favorable for the electron field emission.",

keywords = "Carbon nanotubes/nanofibers (CNTs/CNFs), Field emission, Post-treatment, Screen-printing",

author = "Guo, \{Ping Sheng\} and Zhuo Sun and Zheng, \{Zhi Hao\}",

year = "2006",

month = jun,

language = "英语",

volume = "17",

pages = "681--684",

journal = "Guangdianzi Jiguang/Journal of Optoelectronics Laser",

issn = "1005-0086",

publisher = "Tianjin University of Technology",

number = "6",

}

TY - JOUR

T1 - Heat-treatment process for effectively enhancing field emission characteristics of CNTs/CNFs cathode

AU - Guo, Ping Sheng

AU - Sun, Zhuo

AU - Zheng, Zhi Hao

PY - 2006/6

Y1 - 2006/6

N2 - A novel post-treatment method is reported to improve the field emission characteristics of screen-printed carbon nanotubes/nanofibers (CNTs/CNFs) cathodes. After treated at the temperature of 500°C in H2 and C2H2 gas for 20 min, the CNTs/CNFs cathodes exhibit much better field emission properties than those untreated. After the treatment, the emission current increases from 0.02 mA/cm2 to 0.50 mA/cm2 at 3.9 V/μm with a decrease in the turn-on field from 2.4 V to 1.8 V, and the emission site density is increased by almost four order of number. The enhanced field emission of treated CNTs/ CNFs cathodes is attributed to the appearance of a large number of exposed CNTs/CNFs caused by heat treatment. This surface morphology is very favorable for the electron field emission.

AB - A novel post-treatment method is reported to improve the field emission characteristics of screen-printed carbon nanotubes/nanofibers (CNTs/CNFs) cathodes. After treated at the temperature of 500°C in H2 and C2H2 gas for 20 min, the CNTs/CNFs cathodes exhibit much better field emission properties than those untreated. After the treatment, the emission current increases from 0.02 mA/cm2 to 0.50 mA/cm2 at 3.9 V/μm with a decrease in the turn-on field from 2.4 V to 1.8 V, and the emission site density is increased by almost four order of number. The enhanced field emission of treated CNTs/ CNFs cathodes is attributed to the appearance of a large number of exposed CNTs/CNFs caused by heat treatment. This surface morphology is very favorable for the electron field emission.

KW - Carbon nanotubes/nanofibers (CNTs/CNFs)

KW - Field emission

KW - Post-treatment

KW - Screen-printing

UR - https://www.scopus.com/pages/publications/33747408256

M3 - 文章

AN - SCOPUS:33747408256

SN - 1005-0086

VL - 17

SP - 681

EP - 684

JO - Guangdianzi Jiguang/Journal of Optoelectronics Laser

JF - Guangdianzi Jiguang/Journal of Optoelectronics Laser

IS - 6

ER -

Heat-treatment process for effectively enhancing field emission characteristics of CNTs/CNFs cathode

Abstract

Keywords

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