Electrodeposition of Se on Ti - Impedance and photoelectrochemical study of passivation phenomena

被引：4

作者：

Cattarin, S ^{[1
]}

Musiani, M ^{[1
]}

机构：

[1] CNR, Ist Polarog & Elettrochim Preparat, I-35127 Padua, Italy

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1997年 / 437卷 / 1-2期

关键词：

cathodic deposition; thin film; photoconductivity; high field conduction;

D O I：

10.1016/S0022-0728(97)00067-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The passivation phenomena observed during electrodeposition of Se on Ti substrates have been investigated. A high overpotential for hydrogen evolution appears essential to observation of passive and transpassive domains. Impedance analysis suggests that passivation results from the formation of a thin, highly resistive film, detected under all conditions of current density, temperature, illumination and concentration of sodium n-dodecyl sulphate. Electron transport in this film presumably occurs by a high field conduction mechanism. The deposits show photoconductive properties typical of amorphous Se. (C) 1997 Elsevier Science S.A.

引用

页码：85 / 92

页数：8

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