Semiconducting properties of self-organized TiO2 nanotubes

被引：142

作者：

Munoz, A. G. ^{[1
]}

机构：

[1] Univ Dusseldorf, Inst Angew Phys, D-40225 Dusseldorf, Germany

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 12期

关键词：

TiO2-nanotubes; impedance spectroscopy; A-semiconductors; Mott-Schottky;

D O I：

10.1016/j.electacta.2006.11.035

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The semiconducting properties of anodic grown TiO2-nanotubes were analyzed by means of the potential dependence of the interfacial capacity under different electrolyte and illumination conditions. The experimental results offer evidence for a duplex oxide film conformed by the bottom and wall of pores with different density of donors and concentration of surface states. The surface extension offered by the walls of oxide tubes is manifested in surface related effects such as the shift of the flat band potential and trapping of photoelectrons. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：4167 / 4176

页数：10

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