Photoelectrochemical characterization of sprayed α-Fe2O3 thin films:: Influence of Si doping and SnO2 interfacial layer

被引：90

作者：

Liang, Yongqi ^{[1
]}

Enache, Cristina S. ^{[1
]}

van de Krol, Roel ^{[1
]}

机构：

[1] Delft Univ Technol, Dept DelftChemTech Mat Energy Convers & Storage, Fac Sci Appl, NL-2600 GA Delft, Netherlands

来源：

INTERNATIONAL JOURNAL OF PHOTOENERGY | 2008年 / 2008卷

关键词：

D O I：

10.1155/2008/739864

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：

alpha-Fe2O3 thin film photoanodes for solar water splitting were prepared by spray pyrolysis of Fe(AcAc)(3). The donor density in the Fe2O3 films could be tuned between 10(17)-10(20) cm(-3) by doping with silicon. By depositing a 5 nm SnO2 interfacial layer between the Fe2O3 films and the transparent conducting substrates, both the reproducibility and the photocurrent can be enhanced. The effects of Si doping and the presence of the SnO2 interfacial layer were systematically studied. The highest photoresponse is obtained for Fe2O3 doped with 0.2% Si, resulting in a photocurrent of 0.37mA/cm(2) at 1.23 VRHE in a 1.0M KOH solution under 80 mW/cm(2) AM1.5 illumination. Copyright (c) 2008.

引用

页数：7

共 25 条

[1] Translucent thin film Fe2O3 photoanodes for efficient water splitting by sunlight:: Nanostructure-directing effect of Si-doping [J].