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 |
| 巻 | 215 |
| 号 | 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