Electrochemical deposition of copper oxide nanowires for photoelectrochemical applications

被引：83

作者：

Chen, Le ^{[1
]}

Shet, Sudhakar ^{[1
]}

Tang, Houwen ^{[1
]}

Wang, Heli ^{[1
]}

Deutsch, Todd ^{[1
]}

Yan, Yanfa ^{[1
]}

Turner, John ^{[1
]}

Al-Jassim, Mowafak ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 33期

关键词：

CUPROUS-OXIDE; FILMS; CU2O; DECOMPOSITION;

D O I：

10.1039/c0jm01228a

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：

We report a two-step electrochemical process to grow copper oxide nanowires without the use of templates and surfactants. The first step is to electrochemically corrode amorphous Cu-W oxides pre-sputtered on fluorine-doped tin oxide (FTO) coated glass substrates under positive potentials. The second step is to use the corroded samples to grow copper oxide nanowires electrochemically under negative potentials. We find that copper oxide nanowires grown by this method exhibit excellent contact with the FTO-coated substrates leading to good charge transfer. The oxidation states, i.e., CuO or Cu2O, and morphology of nanowires can be controlled by the applied potentials. Cu2O nanowires grown using this method reveal moderate photoelectrochemical response and stability under illumination and under cathodic bias.

引用

页码：6962 / 6967

页数：6

共 27 条

[1] SPECTROSCOPIC PROPERTIES OF SEMICONDUCTOR CRYSTALS WITH DIRECT FORBIDDEN ENERGY-GAP [J].