Electron transport properties in dye-sensitized nanoporous-nanocrystalline TiO2 films

被引：108

作者：

Lindstrom, H ^{[1
]}

Rensmo, H ^{[1
]}

Sodergren, S ^{[1
]}

Solbrand, A ^{[1
]}

Lindquist, SE ^{[1
]}

机构：

[1] UNIV UPPSALA,DEPT PHYS CHEM,S-75121 UPPSALA,SWEDEN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 08期

关键词：

D O I：

10.1021/jp951314p

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：

Spectral response measurements have been performed on dye-sensitized nanoporous-nanocrystalline TiO2 photoelectrodes. The effects of film thickness, electron scavengers in the electrolyte, and surface treatment of the nanocrystalline film were studied by means of action spectra for front- and back-side illumination. Our results show that electron accepters such as dioxygen and iodine strongly decrease the IPCE. Surface treatment of the electrode with pyridine induces a substantial increase of the photocurrent yields. The observations are discussed in terms of kinetics at the semiconductor-electrolyte interface. IPCE values for sandwich cells were generally much higher than those obtained from three-electrode measurements.

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页码：3084 / 3088

页数：5

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