Nonlinear current-voltage characteristics of homojunctions made by zinc oxide single crystals

Takeshi Harada, Yoshinobu Nakamura, Akira Kishimoto, Naobumi Motohira, Hiroaki Yanagida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Zinc oxide (ZnO) single crystals are grown by the traditional chemical vapor reaction method and ZnO crystal pairs with a single boundary are successfully obtained. The obtained specimens with one ZnO-ZnO boundary (ZnO homojunction) show nonlinear current-voltage (I-V) characteristics without the addition of Bi2O3, CoO, MnO2, and/or rare earth metal oxides. A specimen with higher breakdown voltage shows superior nonlinearity with negative resistivity in its I-V characteristics. Electrical characterization of the ZnO homojunction is conducted and extremely slow response with the current (or voltage) stress is confirmed. The phenomenon had never been observed in commercial ZnO varistors. The surface temperature of the ZnO homojunction is enhanced by larger applied current. The effect of the Joule heat on the nonlinearity in the I-V curves of the ZnO homojunction is discussed.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsW.J. Gray, I.R. Triay
PublisherMaterials Research Society
Pages343-347
Number of pages5
Volume458
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1996 MRS Fall Meeting - Boston, MA, USA
Duration: Dec 2 1996Dec 6 1996

Other

OtherProceedings of the 1996 MRS Fall Meeting
CityBoston, MA, USA
Period12/2/9612/6/96

Fingerprint

Zinc Oxide
Current voltage characteristics
Zinc oxide
Single crystals
Rare Earth Metals
Varistors
Electric potential
Electric breakdown
Oxides
Rare earths
Vapors
Crystals

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Harada, T., Nakamura, Y., Kishimoto, A., Motohira, N., & Yanagida, H. (1997). Nonlinear current-voltage characteristics of homojunctions made by zinc oxide single crystals. In W. J. Gray, & I. R. Triay (Eds.), Materials Research Society Symposium - Proceedings (Vol. 458, pp. 343-347). Materials Research Society.

Nonlinear current-voltage characteristics of homojunctions made by zinc oxide single crystals. / Harada, Takeshi; Nakamura, Yoshinobu; Kishimoto, Akira; Motohira, Naobumi; Yanagida, Hiroaki.

Materials Research Society Symposium - Proceedings. ed. / W.J. Gray; I.R. Triay. Vol. 458 Materials Research Society, 1997. p. 343-347.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harada, T, Nakamura, Y, Kishimoto, A, Motohira, N & Yanagida, H 1997, Nonlinear current-voltage characteristics of homojunctions made by zinc oxide single crystals. in WJ Gray & IR Triay (eds), Materials Research Society Symposium - Proceedings. vol. 458, Materials Research Society, pp. 343-347, Proceedings of the 1996 MRS Fall Meeting, Boston, MA, USA, 12/2/96.
Harada T, Nakamura Y, Kishimoto A, Motohira N, Yanagida H. Nonlinear current-voltage characteristics of homojunctions made by zinc oxide single crystals. In Gray WJ, Triay IR, editors, Materials Research Society Symposium - Proceedings. Vol. 458. Materials Research Society. 1997. p. 343-347
Harada, Takeshi ; Nakamura, Yoshinobu ; Kishimoto, Akira ; Motohira, Naobumi ; Yanagida, Hiroaki. / Nonlinear current-voltage characteristics of homojunctions made by zinc oxide single crystals. Materials Research Society Symposium - Proceedings. editor / W.J. Gray ; I.R. Triay. Vol. 458 Materials Research Society, 1997. pp. 343-347
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