Electrical Properties of ZnO Microvaristors under HV Application

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2012/11/01

タイトル(英語): Electrical Properties of ZnO Microvaristors under HV Application

著者名: Mahmudul Kabir (Graduate School of Engineering and Resource Science, Akita University), Masafumi Suzuki (Graduate School of Engineering and Resource Science, Akita University), Noboru Yoshimura (Akita University), Kayo Shiozawa (Showa Cable Systems Co., L

著者名(英語): Mahmudul Kabir (Graduate School of Engineering and Resource Science, Akita University), Masafumi Suzuki (Graduate School of Engineering and Resource Science, Akita University), Noboru Yoshimura (Akita University), Kayo Shiozawa (Showa Cable Systems Co., Ltd.), Miyuki Ogishima (Showa Cable Systems Co., Ltd.), Hitoshi Shintate (Showa Cable Systems Co., Ltd.), Hideyasu Andoh (Toshiba Corp.)

キーワード: ZnO microvaristor，non-linear properties，air bushing

要約(英語): Zinc oxide (ZnO) particles are well known for their non-linear properties. Recently, they are being used in epoxy resin of Air bushings to control the surface potential distribution. In this research work, we used 4 different types of ZnO particles (A, B, C and D) and measured their electrical characteristics. Among them, A and B were injected to epoxy resin. And the sample A was applied with high voltage (HV) application. Samples A, B and C were treated with heat for couple of hours before measurements. We have developed a measuring system by using a micromanipulator to measure the electrical properties of micro particles. The I-V and C-V characteristics of the samples were measured. We found non-linear properties in each particle while measuring I-V characteristics. Non-linearity appears for the DSB (Double Schottky Barrier) formed in grain boundaries. Microstructures of the samples were observed by a SEM. From their microstructures, it was confirmed that the I-V characteristics of ZnO particles depended only on the grain boundaries. We also calculated the donor concentration of ZnO and barrier height of DSB model from the C-V measurements. We found that the samples were not deteriorated either by HV application or the injection of them to epoxy resin.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.132 No.11 （2012） 特集：放電現象・新素材とその応用技術

本誌掲載ページ: 938-943 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/132/11/132_938/_article/-char/ja/