Improved field-emission properties of carbon nanotube field-emission arrays by controlled density growth of carbon nanotubes

Chuan Ping Juan*, Kuo Ji Chen, Chun Chien Tsai, Kao Chao Lin, Wei Kai Hong, Chen Yu Hsieh, Wen Pin Wang, Rui Ling Lai, Kuei Hsien Chen, Li Chyong Chen, Huang-Chung Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The density distribution of CNTs is one of the crucial parameters determing the field-emission property of CNTs. To effectively control the density of CNTs, an inactive thin-film layer was deposited on a catalyst. The results showed that improved field emission property could be obtained with a thin SiO layer on the catalyst layer as the precursor. For 3.5 nm Fe and 3.5 nm SiO on 3.5 nm Fe as a catalyst, the turn-on field could be decreased from 3.7V/μm. to 2.2 V/μm and the field-emission current density increased from 2.6 × 10-8 A/cm2 to 2.4 × 10-4 A/cm 2 when the applied field was 4 V/μm.

Original languageEnglish
Pages (from-to)365-370
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number1 A
DOIs
StatePublished - 1 Jan 2005

Keywords

  • Carbon nanotubes
  • Density control of CNTs
  • Inactive thin-film layer

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