Nonlinear current-voltage characteristics with negative resistance observed at ZnO-ZnO single-contacts

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

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A couple of zinc oxide (ZnO) single crystals with single boundaries (ZnO-ZnO single-contacts) are fabricated by the traditional vapor reaction method and their electrical properties are characterized. The ZnO-ZnO single-contacts obtained show nonlinear current-voltage (I-V) characteristics without varistor-forming constituents. Some of the ZnO-ZnO single-contacts show pronounced nonlinear I-V characteristics with negative resistance. The I-V characteristics of the ZnO-ZnO single-contacts are apparently similar to those of ZnO varistors; however, there are marked differences in the electric structure of the boundaries between the ZnO-ZnO single-contacts and ZnO varistors. The capacitance-voltage (C-V) relations of the ZnO-ZnO single-contacts are quite different from that of ZnO varistors and no evidence for the formation of double Schottky barriers at the boundary region are found. A very slow response to current stress is a feature of ZnO-ZnO single-contacts and it is suggested that any thermal processes including Joule heat would modify the carrier transport efficiency through the boundaries.

Original languageEnglish
Pages (from-to)3069-3074
Number of pages6
JournalJournal of the American Ceramic Society
Volume82
Issue number11
Publication statusPublished - Nov 1999
Externally publishedYes

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Zinc Oxide
Negative resistance
Current voltage characteristics
Zinc oxide
Varistors

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Nonlinear current-voltage characteristics with negative resistance observed at ZnO-ZnO single-contacts. / Nakamura, Yoshinobu; Harada, Takeshi; Kuribara, Hitoshi; Kishimoto, Akira; Motohira, Naobumi; Yanagida, Hiroaki.

In: Journal of the American Ceramic Society, Vol. 82, No. 11, 11.1999, p. 3069-3074.

Research output: Contribution to journalArticle

Nakamura, Y, Harada, T, Kuribara, H, Kishimoto, A, Motohira, N & Yanagida, H 1999, 'Nonlinear current-voltage characteristics with negative resistance observed at ZnO-ZnO single-contacts', Journal of the American Ceramic Society, vol. 82, no. 11, pp. 3069-3074.
Nakamura, Yoshinobu ; Harada, Takeshi ; Kuribara, Hitoshi ; Kishimoto, Akira ; Motohira, Naobumi ; Yanagida, Hiroaki. / Nonlinear current-voltage characteristics with negative resistance observed at ZnO-ZnO single-contacts. In: Journal of the American Ceramic Society. 1999 ; Vol. 82, No. 11. pp. 3069-3074.
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