Photoinduced absorption spectroscopy of dye-sensitized nanostructured TiO2

被引：104

作者：

Boschloo, G ^{[1
]}

Hagfeldt, A ^{[1
]}

机构：

[1] Uppsala Univ, Dept Chem Phys, SE-75123 Uppsala, Sweden

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 370卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(03)00029-0

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：

Photoinduced absorption (PIA) spectroscopy was used to investigate dye-sensitized electrodes and solar cells under illumination conditions comparable to sunlight. In the absence of redox electrolyte, cis-Ru (dcbpy)(2)(NCS)(2)-sensitized nanostructured TiO2 films show a long-lived photoinduced charge-separation (oxidized dye molecules/injected electrons in TiO2), with a lifetime of about 10(-3) s under full sun illumination. The PIA spectrum of a complete dye-sensitized cell is due to electrons in TiO2 and iodine radicals (12) in the electrolyte. The lifetime of this charge-separated state at open-circuit conditions was determined to be 0.15 s (0.27 sun illumination). (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：381 / 386

页数：6

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