Vertically aligned ZnO nanowires produced by a catalyst-free thermal evaporation method and their field emission properties

Heon Ham, Guozhen Shen, Jung Hee Cho, Tae Jae Lee, Sung Ho Seo, Cheol Jin Lee

Research output: Contribution to journalArticle

124 Citations (Scopus)

Abstract

Vertically aligned ZnO nanowires have been synthesized on Si substrate by catalyst-free thermal evaporating metallic zinc powder at a low temperature of 600°C. Studies found that the ZnO nanowires are single-crystalline wurtzite structures with 70 nm in diameter and 10 μm in length. The turn on field of the ZnO nanowires was about 6.2 V/μm at a current density of 0.1 μA/cm2, and the emission current density reached 1 mA/cm 2 at an applied field of about 15.0 V/μm. Field emission property from the ZnO nanowires was enough high level to be applicable to field emission displays and vacuum microelectronic devices.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalChemical Physics Letters
Volume404
Issue number1-3
DOIs
Publication statusPublished - 2005 Mar 7
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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