Charge transport properties in dye-sensitized nanostructured TiO2 thin film electrodes studied by photoinduced current transients

被引：127

作者：

Solbrand, A

Henningsson, A

Södergren, S

Lindström, H

Hagfeldt, A

Lindquist, SE

机构：

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

[2] Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 07期

关键词：

D O I：

10.1021/jp982151i

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 charge transport in dye-sensitized nanostructured TiO2 was studied by laser pulse induced photocurrent transients. The experimental curves were compared to simulations using a diffusion model with an initial electron distribution of an exponential decay. The simulations were optimized with respect to the experimental curves giving an apparent diffusion coefficient of 6 x 10(-6) cm(2)/S for the electrons with an electrolyte of 0.1 M KI in propylene carbonate, the potential being +300 mV vs Ag/AgCl in ethanol. The charge transport was highly dependent on electrolyte composition and light intensity.

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页码：1078 / 1083

页数：6

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