CONDUCTION MECHANISM IN INDIUM TIN OXIDE ELECTROINACTIVE POLYPYRROLE INDIUM TIN OXIDE SANDWICH STRUCTURES

被引：11
|
作者：
OSAKA, T
FUKUDA, T
OUCHI, K
MOMMA, T
机构：
[1] Department of Applied Chemistry, School of Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, 169
来源：
THIN SOLID FILMS | 1992年 / 215卷 / 02期
关键词：
D O I：
10.1016/0040-6090(92)90438-H
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：200 / 202
页数：3
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