ELECTRON-TRANSPORT IN THE NANOSTRUCTURED TIO2-ELECTROLYTE SYSTEM STUDIED WITH TIME-RESOLVED PHOTOCURRENTS

Authors
SOLBRAND A LINDSTROM H RENSMO H HAGFELDT A LINDQUIST SE SODERGREN S
Citation
A. Solbrand et al., ELECTRON-TRANSPORT IN THE NANOSTRUCTURED TIO2-ELECTROLYTE SYSTEM STUDIED WITH TIME-RESOLVED PHOTOCURRENTS, JOURNAL OF PHYSICAL CHEMISTRY B, 101(14), 1997, pp. 2514-2518
Citations number
18
Categorie Soggetti
Chemistry Physical
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
101
Issue
14
Year of publication
1997
Pages
2514 - 2518
Database
ISI
SICI code
1089-5647(1997)101:14<2514:EITNTS>2.0.ZU;2-U
Abstract
Laser flash induced photocurrent transient measurements have been used to investigate the electron transport in nanostructured TiO2 (anatase ) thin film electrodes in contact with an electrolyte. The shape and t he time domain for the current transients were found to be dependent o n film thickness and electrolyte conductivity. The experimental result s are discussed using a diffusion model. If the experimental results a re interpreted as diffusion, a chemical diffusion coefficient for the electrons in the nanostructured system is determined to 1.5 x 10(-5) c m(2)/s using 700 mM LiClO4 in ethanol as electrolyte.