Current-voltage characteristics of cobalt-doped inversion boundaries in zinc oxide bicrystals

Fumiyasu Oba, Yukio Sato, Takahisa Yamamoto, Yuichi Ikuhara, Taketo Sakuma

研究成果: ジャーナルへの寄稿学術誌査読

19 被引用数 (Scopus)

抄録

Undoped and cobalt-doped basal inversion boundaries were fabricated in ZnO bicrystals to investigate their current-voltage characteristics. High-resolution transmission electron microscopy observations and energy-dispersive X-ray spectroscopy analyses for a cobalt-doped bicrystal revealed that the boundary was highly coherent and free from intergranular phases and precipitates, but a certain amount of cobalt was present near the boundary. The cobalt-doped bicrystals exhibited nonlinear characteristics that depend on cooling rates from annealing temperature, in contrast to linear characteristics of the undoped bicrystals. It is suggested that the presence of cobalt impurities enhances the formation of acceptor-like native defects near the boundaries to generate electrostatic potential barriers.

本文言語英語
ページ(範囲)1616-1618
ページ数3
ジャーナルJournal of the American Ceramic Society
86
9
DOI
出版ステータス出版済み - 1月 1 2003
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 地質学
  • 地球化学および岩石学
  • 材料化学

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