MOBILITY OF IONIC SPACE CHARGES IN THIN INSULATING FILMS

被引：13

作者：

KLUGER, K

LOHRENGEL, MM

机构：

[1] Heinrich-Heine-Univ Duesseldorf, Duesseldorf

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1991年 / 95卷 / 11期

关键词：

ALUMINUM OXIDE; ELECTROCHEMISTRY; INTERFACES; IONIC CONDUCTION; TRANSIENTS;

D O I：

10.1002/bbpc.19910951127

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The anodic oxide formation on high-purity aluminium electrodes in an acetate buffer of pH 5.9 has been studied by potentiostatic pulse measurements. When the field strength E is low, the concentration of mobile charge carriers is close to zero. When the field strength is increased, ions are transferred through the phase boundaries forming vacancies or ions at interstitial sites to guarantee a sufficient ionic conductivity of the oxide. Using multiple pulse measurements the presence and the dwell time of the mobile charge carriers can be monitored. The modifications of the conventional high field model are described. At low field strength the injected mobile charge carrier concentration decreases exponentially with waiting time.

引用

页码：1458 / 1461

页数：4

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