Electron Transport in the Nanostructured TiO2−Electrolyte System Studied with Time-Resolved Photocurrents

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 the time domain for the current transients were found to be dependent on film thickness and...

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Published in:The journal of physical chemistry. B 1997-04, Vol.101 (14), p.2514-2518
Main Authors: Solbrand, Anita, Lindström, Henrik, Rensmo, Håkan, Hagfeldt, Anders, Lindquist, Sten-Eric, Södergren, Sven
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container_issue 14
container_start_page 2514
container_title The journal of physical chemistry. B
container_volume 101
creator Solbrand, Anita
Lindström, Henrik
Rensmo, Håkan
Hagfeldt, Anders
Lindquist, Sten-Eric
Södergren, Sven
description 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 the time domain for the current transients were found to be dependent on film thickness and electrolyte conductivity. The experimental results are discussed using a diffusion model. If the experimental results are interpreted as diffusion, a chemical diffusion coefficient for the electrons in the nanostructured system is determined to 1.5 × 10-5 cm2/s using 700 mM LiClO4 in ethanol as electrolyte.
doi_str_mv 10.1021/jp962819y
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title Electron Transport in the Nanostructured TiO2−Electrolyte System Studied with Time-Resolved Photocurrents
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