Stable field emission property of patterned MgO coated carbon nanotube arrays

Supriya Chakrabarti; Lujun Pan; Hiroyoshi Tanaka; Shogo Hokushin; Yoshikazu Nakayama

doi:10.1143/JJAP.46.4364

Stable field emission property of patterned MgO coated carbon nanotube arrays

Supriya Chakrabarti, Lujun Pan, Hiroyoshi Tanaka, Shogo Hokushin, Yoshikazu Nakayama

School of Engineering

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

23 Citations (Scopus)

Abstract

Aligned carbon nanotubes (CNTs) in a specific pattern were synthesized by catalytic thermal chemical vapor deposition (CVD) technique. The carbon nanotubes were then coated with MgO layer of different thicknesses to improve the field emission property. Field emission with high stability and low turn-on voltage of about 116 V was observed for the aligned nanotubes coated with a MgO layer of thickness 10 nm compared to that of uncoated CNTs. The current fluctuation for 8 h was found to be as low as 9% for MgO (10 nm) coated nanotubes. The field emission image indicated a very uniform emission from the whole area of the deposited CNTs on the substrate for the 10-nm-MgO-coated CNTs.

Original language	English
Pages (from-to)	4364-4369
Number of pages	6
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	7 A
DOIs	https://doi.org/10.1143/JJAP.46.4364
Publication status	Published (in print/issue) - 4 Jul 2007

Keywords

Field emission
High stability
Low turn-on voltage
MgO coating
Patterned aligned carbon nanotubes

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10.1143/JJAP.46.4364

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abstract = "Aligned carbon nanotubes (CNTs) in a specific pattern were synthesized by catalytic thermal chemical vapor deposition (CVD) technique. The carbon nanotubes were then coated with MgO layer of different thicknesses to improve the field emission property. Field emission with high stability and low turn-on voltage of about 116 V was observed for the aligned nanotubes coated with a MgO layer of thickness 10 nm compared to that of uncoated CNTs. The current fluctuation for 8 h was found to be as low as 9% for MgO (10 nm) coated nanotubes. The field emission image indicated a very uniform emission from the whole area of the deposited CNTs on the substrate for the 10-nm-MgO-coated CNTs.",

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AU - Chakrabarti, Supriya

AU - Pan, Lujun

AU - Tanaka, Hiroyoshi

AU - Hokushin, Shogo

AU - Nakayama, Yoshikazu

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AB - Aligned carbon nanotubes (CNTs) in a specific pattern were synthesized by catalytic thermal chemical vapor deposition (CVD) technique. The carbon nanotubes were then coated with MgO layer of different thicknesses to improve the field emission property. Field emission with high stability and low turn-on voltage of about 116 V was observed for the aligned nanotubes coated with a MgO layer of thickness 10 nm compared to that of uncoated CNTs. The current fluctuation for 8 h was found to be as low as 9% for MgO (10 nm) coated nanotubes. The field emission image indicated a very uniform emission from the whole area of the deposited CNTs on the substrate for the 10-nm-MgO-coated CNTs.

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KW - Low turn-on voltage

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Stable field emission property of patterned MgO coated carbon nanotube arrays

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