Field emission properties of carbon nanotubes with different morphologies

Hoon Sik Jang; Hyeong Rag Lee; Do Hyung Kim

doi:10.1016/j.tsf.2005.11.037

Field emission properties of carbon nanotubes with different morphologies

Hoon Sik Jang, Hyeong Rag Lee, Do Hyung Kim

Department of Physics

Kyungpook National University

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

24 Scopus citations

Abstract

The field emission behavior of base-model well-aligned carbon nanotubes (Base-CNTs), curled carbon nanotubes (Curled-CNTs), and tip-model well-aligned CNTs (Tip-CNTs) was examined. The nanotubes were fabricated by means of direct current plasma-enhanced chemical vapor deposition using different ammonia (NH₃) pre-treatment plasma currents. The turn-on electric field values required to obtain a 10-nA current for Base-CNTs, Curled-CNTs, and Tip-CNTs were determined at 3.8, 4.3, and 4.9 V/μm, respectively. The field enhancement factor γ of Base-CNTs, calculated from a Fowler-Nordheim plot, was higher than that for the Curled-CNTs and Tip-CNTs. In the presence of a strong electric field, argon ion irradiation permanently straightened the as-grown Curled-CNTs films. The straightening process enhanced the emission properties of the as-grown Curled-CNTs films by decreasing the turn-on field and increasing the total emission current. Thus, morphology parameters of the MWNTs significantly affect the emission properties of CNTs.

Original language	English
Pages (from-to)	124-128
Number of pages	5
Journal	Thin Solid Films
Volume	500
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tsf.2005.11.037
State	Published - 3 Apr 2006

Keywords

Carbon
Field emission

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10.1016/j.tsf.2005.11.037

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title = "Field emission properties of carbon nanotubes with different morphologies",

abstract = "The field emission behavior of base-model well-aligned carbon nanotubes (Base-CNTs), curled carbon nanotubes (Curled-CNTs), and tip-model well-aligned CNTs (Tip-CNTs) was examined. The nanotubes were fabricated by means of direct current plasma-enhanced chemical vapor deposition using different ammonia (NH3) pre-treatment plasma currents. The turn-on electric field values required to obtain a 10-nA current for Base-CNTs, Curled-CNTs, and Tip-CNTs were determined at 3.8, 4.3, and 4.9 V/μm, respectively. The field enhancement factor γ of Base-CNTs, calculated from a Fowler-Nordheim plot, was higher than that for the Curled-CNTs and Tip-CNTs. In the presence of a strong electric field, argon ion irradiation permanently straightened the as-grown Curled-CNTs films. The straightening process enhanced the emission properties of the as-grown Curled-CNTs films by decreasing the turn-on field and increasing the total emission current. Thus, morphology parameters of the MWNTs significantly affect the emission properties of CNTs.",

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author = "Jang, {Hoon Sik} and Lee, {Hyeong Rag} and Kim, {Do Hyung}",

year = "2006",

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doi = "10.1016/j.tsf.2005.11.037",

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journal = "Thin Solid Films",

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TY - JOUR

T1 - Field emission properties of carbon nanotubes with different morphologies

AU - Jang, Hoon Sik

AU - Lee, Hyeong Rag

AU - Kim, Do Hyung

PY - 2006/4/3

Y1 - 2006/4/3

N2 - The field emission behavior of base-model well-aligned carbon nanotubes (Base-CNTs), curled carbon nanotubes (Curled-CNTs), and tip-model well-aligned CNTs (Tip-CNTs) was examined. The nanotubes were fabricated by means of direct current plasma-enhanced chemical vapor deposition using different ammonia (NH3) pre-treatment plasma currents. The turn-on electric field values required to obtain a 10-nA current for Base-CNTs, Curled-CNTs, and Tip-CNTs were determined at 3.8, 4.3, and 4.9 V/μm, respectively. The field enhancement factor γ of Base-CNTs, calculated from a Fowler-Nordheim plot, was higher than that for the Curled-CNTs and Tip-CNTs. In the presence of a strong electric field, argon ion irradiation permanently straightened the as-grown Curled-CNTs films. The straightening process enhanced the emission properties of the as-grown Curled-CNTs films by decreasing the turn-on field and increasing the total emission current. Thus, morphology parameters of the MWNTs significantly affect the emission properties of CNTs.

AB - The field emission behavior of base-model well-aligned carbon nanotubes (Base-CNTs), curled carbon nanotubes (Curled-CNTs), and tip-model well-aligned CNTs (Tip-CNTs) was examined. The nanotubes were fabricated by means of direct current plasma-enhanced chemical vapor deposition using different ammonia (NH3) pre-treatment plasma currents. The turn-on electric field values required to obtain a 10-nA current for Base-CNTs, Curled-CNTs, and Tip-CNTs were determined at 3.8, 4.3, and 4.9 V/μm, respectively. The field enhancement factor γ of Base-CNTs, calculated from a Fowler-Nordheim plot, was higher than that for the Curled-CNTs and Tip-CNTs. In the presence of a strong electric field, argon ion irradiation permanently straightened the as-grown Curled-CNTs films. The straightening process enhanced the emission properties of the as-grown Curled-CNTs films by decreasing the turn-on field and increasing the total emission current. Thus, morphology parameters of the MWNTs significantly affect the emission properties of CNTs.

KW - Carbon

KW - Field emission

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DO - 10.1016/j.tsf.2005.11.037

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SN - 0040-6090

VL - 500

SP - 124

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JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

Field emission properties of carbon nanotubes with different morphologies

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Keywords

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