Saturation Current Produced by Exponential Decrease in Local Mobility in Low-density Polyethylene with Charge Packet

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: 2021/10/01

タイトル(英語): Saturation Current Produced by Exponential Decrease in Local Mobility in Low-density Polyethylene with Charge Packet

著者名: Takahiro Mihara (Graduate School of Science and Engineering, Ehime University), Ryotaro Ozaki (Graduate School of Science and Engineering, Ehime University), Kazunori Kadowaki (Graduate School of Science and Engineering, Ehime University)

著者名(英語): Takahiro Mihara (Graduate School of Science and Engineering, Ehime University), Ryotaro Ozaki (Graduate School of Science and Engineering, Ehime University), Kazunori Kadowaki (Graduate School of Science and Engineering, Ehime University)

キーワード: low-density polyethylene，local mobility，saturation current，space-charge-limited current

要約(英語): This paper presents an experimental study on saturation current for a low-density polyethylene (LDPE) with a semiconduction- anode and aluminum-cathode system under various temperatures. The current density at 30℃ saturates and then finally decreases though the applied field E increases step by step from 0.1 to 1.5 MV/cm. The space charge distributions at 30℃ are quite different from the theoretical distributions based on the space-charge-limited current model with a constant mobility. A large number of positive charges are injected from the anode and then they form a large packet in the LDPE bulk near the cathode, so that the field distribution is strongly distorted. The saturation current with the charge packet implies that local mobility at the positively charged region is much smaller than that at the other regions. The local mobility calculated with an assumption that only the positive charges are injected into the LDPE bulk exponentially decreases with increasing E at 30℃.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.141 No.10 （2021） 特集：9th International Symposium on Electrical Insulating Materials

本誌掲載ページ: 540-545 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/141/10/141_540/_article/-char/ja/