Conduction mechanism in indium tin oxide/electroinactive polypyrrole/indium tin oxide sandwich structures

Tetsuya Osaka*, Toshihiro Fukuda, Kiyoshi Ouchi, Toshiyuki Momma

*この研究の対応する著者

研究成果: Article査読

15 被引用数 (Scopus)

抄録

The electrical conduction mechanism for the indium tin oxide (ITO)/polypyrrole (PPy)/ITO sandwich type of metal-insulator-metal element was investigated, where electroinactive PPy polymerized in aqueous NaOH solution was used as an insulator. The ITO/PPy/Au element demonstrated a non-linear J-V response exactly the same as that of the ITO/PPy/ITO element, indicating that the carriers do not come from the interface but the bulk of an insulator. For the temperature dependence of the J-V responses of the ITO/PPy/ITO element, Poole-Frenkel emission is confirmed to be a dominant conduction mechanism. The activation energy of PPy electropolymerized for 60 min was calculated to be 0.46 eV on the basis of Poole-Frenkel emission. The activation energy and the conductivity of the PPy film were dependent on polymerization time.

本文言語English
ページ(範囲)200-202
ページ数3
ジャーナルThin Solid Films
215
2
DOI
出版ステータスPublished - 1992 8 14

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 表面および界面
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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