Photoelectrochemical properties of nano- to microstructured ZnO electrodes

被引：93

作者：

Keis, K ^{[1
]}

Vayssieres, L ^{[1
]}

Rensmo, H ^{[1
]}

Lindquist, SE ^{[1
]}

Hagfeldt, A ^{[1
]}

机构：

[1] Univ Uppsala, Dept Phys Chem, S-75121 Uppsala, Sweden

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2001年 / 148卷 / 02期

关键词：

D O I：

10.1149/1.1342165

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The photoelectrochemical properties of ZnO electrodes were investigated in the near-UV region. Studies were carried out on electrodes with different morphologies, porosities, and him thicknesses in order to probe the influence of these;parameters on the photoelectrochemical characteristics. The highest incident photon-to-current conversion efficiencies of 90 and 30% for illumination through the Conducting substrate and directly on the ZnO, respectively, were obtained with a 8 mum thick ZnO film consisting of 150 nm spherical particles. For this system, no significant decrease in the photocurrent due to addition of iodine or oxygen to the electrolyte was found. We conclude that the electron losses from the conduction band of the ZnO electrodes are restricted to the zone of charge-carrier generation. (C) 2001 The Electrochemical Society. All rights reserved.

引用

页码：A149 / A155

页数：7

共 34 条

[1]

Bard A. J., 1995, STANDARD POTENTIALS

[2] PREPARATION AND PHOTOELECTROCHEMICAL CHARACTERIZATION OF THIN SNO(2) NANOCRYSTALLINE SEMICONDUCTOR-FILMS AND THEIR SENSITIZATION WITH BIS(2,2'-BIPYRIDINE)(2,2'-BIPYRIDINE-4,4'-DICARBOXYLIC ACID)RUTHENIUM(II) COMPLEX [J].