Current-voltage characteristic and grain boundary Structure in undoped and Pr and Co doped ZnO bicrystals

Yukio Sato, Fumiyasu Oba, Masatada Yodogawa, Takahisa Yamamoto, Yuichi Ikuhara

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Our recent studies on current-voltage characteristic and grain boundary structure in ZnO bicrystals are reviewed in this paper. All types of undoped ZnO bicrystals showed Ohmic characteristics. This indicates that nonlinear current-voltage characteristic cannot be generated solely by the atomic disarrangement in undoped ZnO. On the other hand, co-doped ZnO bicrystals showed nonlinear current-voltage characteristics, which depended on the types of grain boundary. It is considered that the nonlinearity depends on the Pr concentrations at the respective grain boundaries.

Original languageEnglish
Pages (from-to)3867-3870
Number of pages4
JournalMaterials Science Forum
Issue numberV
Publication statusPublished - 2005 Jan 1
Externally publishedYes
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: 2004 Nov 22004 Nov 5


  • Co
  • Current-Voltage (I-V) characteristic
  • Double Schottky barrier
  • EDS
  • Grain boundary
  • Pr
  • TEM
  • Varistor
  • ZnO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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