Improved field emission stability of thin multiwalled carbon nanotube emitters

Guohai Chen; Dong Hoon Shin; Suki Kim; Siegmar Roth; Cheol Jin Lee

doi:10.1088/0957-4484/21/1/015704

Improved field emission stability of thin multiwalled carbon nanotube emitters

Guohai Chen, Dong Hoon Shin, Suki Kim, Siegmar Roth, Cheol Jin Lee

School of Electrical Engineering

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

40 Citations (Scopus)

Abstract

The improved field emission stability of thin multiwalled carbon nanotube (thin-MWCNT) emitters using a tip sonication process has been investigated. The thin-MWCNTs showed short lengths and many open tips after the tip sonication treatment. The field emission properties of the thin-MWCNT emitters were investigated. Field emission stability dramatically increased as the tip sonication time increased. In particular, field emission current at an acceleration condition was quite stable and showed no degradation for over 19h after tip sonication treatment of 30min. Tip sonication could effectively cut CNTs short and regulate the length of CNTs. Therefore, field emission stability was significantly improved during a long period of operation because many shortened thin-MWCNTs could participate in field emission after the treatment.

Original language	English
Article number	015704
Journal	Nanotechnology
Volume	21
Issue number	1
DOIs	https://doi.org/10.1088/0957-4484/21/1/015704
Publication status	Published - 2010

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0957-4484/21/1/015704

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abstract = "The improved field emission stability of thin multiwalled carbon nanotube (thin-MWCNT) emitters using a tip sonication process has been investigated. The thin-MWCNTs showed short lengths and many open tips after the tip sonication treatment. The field emission properties of the thin-MWCNT emitters were investigated. Field emission stability dramatically increased as the tip sonication time increased. In particular, field emission current at an acceleration condition was quite stable and showed no degradation for over 19h after tip sonication treatment of 30min. Tip sonication could effectively cut CNTs short and regulate the length of CNTs. Therefore, field emission stability was significantly improved during a long period of operation because many shortened thin-MWCNTs could participate in field emission after the treatment.",

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AU - Chen, Guohai

AU - Shin, Dong Hoon

AU - Kim, Suki

AU - Roth, Siegmar

AU - Lee, Cheol Jin

PY - 2010

Y1 - 2010

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AB - The improved field emission stability of thin multiwalled carbon nanotube (thin-MWCNT) emitters using a tip sonication process has been investigated. The thin-MWCNTs showed short lengths and many open tips after the tip sonication treatment. The field emission properties of the thin-MWCNT emitters were investigated. Field emission stability dramatically increased as the tip sonication time increased. In particular, field emission current at an acceleration condition was quite stable and showed no degradation for over 19h after tip sonication treatment of 30min. Tip sonication could effectively cut CNTs short and regulate the length of CNTs. Therefore, field emission stability was significantly improved during a long period of operation because many shortened thin-MWCNTs could participate in field emission after the treatment.

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Improved field emission stability of thin multiwalled carbon nanotube emitters

Abstract

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