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Field emission from hydrothermally grown ZnO nanoinjectors

  • Ang Wei
  • , Chunxiang Xu
  • , X. W. Sun
  • , Wei Huang
  • , Guo Qiang Lo
  • Nanjing University of Posts and Telecommunications
  • Southeast University, Nanjing
  • IEEE
  • Nanyang Technological University
  • Agency for Science, Technology and Research, Singapore

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

An injector-like nanostructure of ZnO fabricated by hydrothermal method was tested for field emission (FE) properties. The turn-on field of 3.8 V / μm was obtained at a current density of 0.1 μA/cm2. Above the turn-on field, the emission current density quickly raised up to 1 mA/cm2 at about 12.8 V/μm. The field enhancement factor β was estimated to be 2556 and 1226 in the low and high field regions, respectively. The two-slope FE behavior was attributed to the adsorbates and defects which were introduced in the fabrication process in aqueous solution at low temperature. The good FE properties of the ZnO nanoinjectors indicate that they are applicable as low-cost and low-temperature cathode materials for FE-based devices.

Original languageEnglish
Article number4356485
Pages (from-to)9-12
Number of pages4
JournalIEEE/OSA Journal of Display Technology
Volume4
Issue number1
DOIs
StatePublished - Mar 2008
Externally publishedYes

Keywords

  • Display panel
  • Field emission (FE)
  • Hydrothermal method
  • ZnO

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