Absolute emission current density of O- from 12CaO7Al 2O3 crystal

Q. X. Li, K. Hayashi, M. Nishioka, H. Kashiwagi, M. Hirano, Y. Torimoto, H. Hosono, M. Sadakata

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96 Citations (Scopus)


Strong and high purity O- negative ion emission has been observed from a synthesized crystal 12CaO7Al2O3 surface. A μA/cm2-level O- emission from this material has been achieved at the surface temperature of 800°C and the extraction field over 1000 V/cm, which is about three orders of magnitude higher than the current density emitted from the Y2O3-stabilized ZrO2 electrolyte surface. The strong emissivity of this material, as well as easy and economical fabrication, may provide a useful tool to generate the O- negative ion, which is expected to be one of the most important radicals for chemical syntheses and material modifications.

Original languageEnglish
Pages (from-to)4259-4261
Number of pages3
JournalApplied Physics Letters
Issue number22
Publication statusPublished - Jun 3 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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