Improvement of field emission characteristics of carbon nanotubes by excimer laser treatment

Kuo Ji Chen*, Wei Kai Hong, Chia Pin Lin, Kuei Hsien Chen, Li Chyong Chen, Huang-Chung Cheng

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The density of carbon nanotubes (CNTs) deposited by microwave plasma chemical vapor deposition (MPCVD) is extremely high, which results in screening effect in the electric field. To achieve excellent field emission characteristics, an excimer laser treatment (ELT) was introduced to reduce the density of CNTs. Scanning electron microscopy (SEM) micrographs showed reduced densities of the CNTs, and the measurement of electrical characteristics results revealed the improved field emission properties under suitable ELT conditions. The turn-on field decreased from 3 V/μm to 2.1 V/μm, and the emission current density increased from 5.73 mA/cm2 to 87.13 mA/cm2 at the applied field of 5 V/μm.

Original languageEnglish
Pages (from-to)6132-6136
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number10
DOIs
StatePublished - 1 Oct 2002

Keywords

  • Carbon nanotubes
  • Field emission diode
  • Field emission display

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