Graphite coated CNTs for high current electron emission devices

Su Woong Lee, Woo Mi Bae, An Na Ha, Eun Hye Lee, Hee Chul Woo, Young Ju Eom, Jang Jin, Kyu Chang Park, K. S. Park, C. D. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

We studied the effect of resin treatment of carbon nanotubes (CNTs) on field emission from carbon nanotube electron emitter arrays grown using the resist-assisted patterning (RAP) process. The electron emission current and stability of emission current of graphite coated CNTs were remarkably improved. We measured about 10 times increase of field emission current and better emission stability with graphite coated CNTs. The emission current densities of as grown CNT emitter arrays and those which were later processed by resin treatment, were 1.9 mA/cm2 and 20.2 mA/cm2, respectively, when measured at an anode field of 8.0 V/μm. The enhancement in electron emission of CNTs after resin treatment appears to be due to the effect of graphitization between the substrate and CNTs. Such graphitization increases the adhesion between the substrate and CNTs and increases the thermal dispersion property caused by high electron emission current.

Original languageEnglish
Title of host publicationProceedings - IVNC 2011
Subtitle of host publication2011 24th International Vacuum Nanoelectronics Conference
Pages73-74
Number of pages2
Publication statusPublished - 2011
Event2011 24th International Vacuum Nanoelectronics Conference, IVNC 2011 - Wuppertal, Germany
Duration: 18 Jul 201122 Jul 2011

Publication series

NameProceedings - IVNC 2011: 2011 24th International Vacuum Nanoelectronics Conference

Conference

Conference2011 24th International Vacuum Nanoelectronics Conference, IVNC 2011
Country/TerritoryGermany
CityWuppertal
Period18/07/1122/07/11

Keywords

  • Carbon nanotubes
  • Electron emission
  • Graphitization
  • Resin treatment

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