Improvement of field emission properties from screen-printed CNTs cathodes by heat treatment in a C2H2/H2 gas mixture

P. S. Guo; Z. Sun; S. Ni; Y. W. Chen; Z. Y. Cao

doi:10.1002/sia.2317

Improvement of field emission properties from screen-printed CNTs cathodes by heat treatment in a C₂H₂/H₂ gas mixture

P. S. Guo^*
, Z. Sun
, S. Ni
, Y. W. Chen
, Z. Y. Cao

^*Corresponding author for this work

School of Physics and Electronic Science

East China Normal University

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

3 Scopus citations

Abstract

We developed a posttreatment method for the screen-printed carbon nanotubes (CNTs) cathode to improve its field emission characteristics. The treatment was carried out at 500 °C and 20kPa for 20 min in the atmosphere of C ₂H₂/H₂ (volume ratio 1:2). After the treatment, the field emission characteristics were greatly improved. The turn-on field lowered from 5.0 to 1.6 V/μm, and the emission current density increased from 2 × 10^-4 to 1.0 mA/cm² at the electric field of 2.6 V/μm. In the mean time, the emission site density and uniformity were significantly increased. Scanning electron microscope images revealed that a new top layer of CNTs film has re-grown on the surface of the printed CNTs cathode during the treatment. This new re-grown CNTs layer contributes to the drastic enhancement of field emission from the printed cathode. This heat-treatment technique is very promising for practical application of CNTs in field emission display.

Original language	English
Pages (from-to)	981-986
Number of pages	6
Journal	Surface and Interface Analysis
Volume	38
Issue number	5
DOIs	https://doi.org/10.1002/sia.2317
State	Published - May 2006

Keywords

Carbon nanotubes (CNTs)
Field emission
Screen printing

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10.1002/sia.2317

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title = "Improvement of field emission properties from screen-printed CNTs cathodes by heat treatment in a C2H2/H2 gas mixture",

abstract = "We developed a posttreatment method for the screen-printed carbon nanotubes (CNTs) cathode to improve its field emission characteristics. The treatment was carried out at 500 °C and 20kPa for 20 min in the atmosphere of C 2H2/H2 (volume ratio 1:2). After the treatment, the field emission characteristics were greatly improved. The turn-on field lowered from 5.0 to 1.6 V/μm, and the emission current density increased from 2 × 10-4 to 1.0 mA/cm2 at the electric field of 2.6 V/μm. In the mean time, the emission site density and uniformity were significantly increased. Scanning electron microscope images revealed that a new top layer of CNTs film has re-grown on the surface of the printed CNTs cathode during the treatment. This new re-grown CNTs layer contributes to the drastic enhancement of field emission from the printed cathode. This heat-treatment technique is very promising for practical application of CNTs in field emission display.",

keywords = "Carbon nanotubes (CNTs), Field emission, Screen printing",

author = "Guo, \{P. S.\} and Z. Sun and S. Ni and Chen, \{Y. W.\} and Cao, \{Z. Y.\}",

year = "2006",

month = may,

doi = "10.1002/sia.2317",

language = "英语",

volume = "38",

pages = "981--986",

journal = "Surface and Interface Analysis",

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}

TY - JOUR

T1 - Improvement of field emission properties from screen-printed CNTs cathodes by heat treatment in a C2H2/H2 gas mixture

AU - Guo, P. S.

AU - Sun, Z.

AU - Ni, S.

AU - Chen, Y. W.

AU - Cao, Z. Y.

PY - 2006/5

Y1 - 2006/5

N2 - We developed a posttreatment method for the screen-printed carbon nanotubes (CNTs) cathode to improve its field emission characteristics. The treatment was carried out at 500 °C and 20kPa for 20 min in the atmosphere of C 2H2/H2 (volume ratio 1:2). After the treatment, the field emission characteristics were greatly improved. The turn-on field lowered from 5.0 to 1.6 V/μm, and the emission current density increased from 2 × 10-4 to 1.0 mA/cm2 at the electric field of 2.6 V/μm. In the mean time, the emission site density and uniformity were significantly increased. Scanning electron microscope images revealed that a new top layer of CNTs film has re-grown on the surface of the printed CNTs cathode during the treatment. This new re-grown CNTs layer contributes to the drastic enhancement of field emission from the printed cathode. This heat-treatment technique is very promising for practical application of CNTs in field emission display.

AB - We developed a posttreatment method for the screen-printed carbon nanotubes (CNTs) cathode to improve its field emission characteristics. The treatment was carried out at 500 °C and 20kPa for 20 min in the atmosphere of C 2H2/H2 (volume ratio 1:2). After the treatment, the field emission characteristics were greatly improved. The turn-on field lowered from 5.0 to 1.6 V/μm, and the emission current density increased from 2 × 10-4 to 1.0 mA/cm2 at the electric field of 2.6 V/μm. In the mean time, the emission site density and uniformity were significantly increased. Scanning electron microscope images revealed that a new top layer of CNTs film has re-grown on the surface of the printed CNTs cathode during the treatment. This new re-grown CNTs layer contributes to the drastic enhancement of field emission from the printed cathode. This heat-treatment technique is very promising for practical application of CNTs in field emission display.

KW - Carbon nanotubes (CNTs)

KW - Field emission

KW - Screen printing

UR - https://www.scopus.com/pages/publications/33646562868

U2 - 10.1002/sia.2317

DO - 10.1002/sia.2317

M3 - 文章

AN - SCOPUS:33646562868

SN - 0142-2421

VL - 38

SP - 981

EP - 986

JO - Surface and Interface Analysis

JF - Surface and Interface Analysis

IS - 5

ER -

Improvement of field emission properties from screen-printed CNTs cathodes by heat treatment in a C₂H₂/H₂ gas mixture

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Keywords

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