Photoelectrochemical properties of nanostructured tungsten trioxide films

被引：432

作者：

Santato, C ^{[1
]}

Ulmann, M ^{[1
]}

Augustynski, J ^{[1
]}

机构：

[1] Univ Geneva, Dept Chem, CH-1211 Geneva 4, Switzerland

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2001年 / 105卷 / 05期

关键词：

D O I：

10.1021/jp002232q

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：

The photoelectrochemical characteristics of highly transparent nanoporoys WO3 films are described. The photocurrent versus excitation wavelength spectra of these photoelectrodes exhibit a maximum close to 400 nm and a significant photoresponse to the blue part of the visible spectrum. The observed conversion efficiencies attain 75% for the photogeneration of oxygen from 1 M aq HClO4 and reach 190% in the presence of methanol in the solution, denoting in the latter case the occurrence of a perfect photocurrent doubling. Experiments conducted under simulated solar AM 1.5 illumination resulted in steady-state anodic photocurrents of the order of several mA/cm(2).

引用

页码：936 / 940

页数：5

共 30 条

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