Photoelectrochemical characterization of Cu2O-Nanowire arrays electrodeposited into anodic alumina membranes

被引：30

作者：

Inguanta, R. ^{[1
]}

Sunseri, C. ^{[1
]}

Piazza, S. ^{[1
]}

机构：

[1] Univ Palermo, Dipartimento Ingn Chim Proc & Mat, I-90128 Palermo, Italy

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 12期

关键词：

D O I：

10.1149/1.2789403

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Perfectly aligned nanowire arrays of polycrystalline Cu2O were grown by template-pulsed electrodeposition from a cupric acetate-sodium acetate bath into anodic alumina membranes (AAM). The photoelectrochemical behavior of arrays with different nanowire lengths (0.5 mu m and 2 mu m) was investigated in neutral solution, and the results compared to those pertaining to Cu2O films grown with the same procedure. Although all samples displayed the same indirect bandgap (similar to 1.9 eV), differences were observed both in photocurrent intensity and sign. The latter changed with potential and wavelength in different ways for nanowires and films, revealing a different defect concentration in the two cases. (C) 2007 The Electrochemical Society.

引用

页码：K63 / K66

页数：4

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