Slow electron injection on Ru-phthalocyanine sensitized TiO2

被引：124

作者：

Morandeira, Ana

Lopez-Duarte, Ismael

Martinez-Diaz, M. Victoria

O'Regan, Brian

Shuttle, Chris

Haji-Zainulabidin, Nor A.

Torres, Tomas ^{[1
]}

Palomares, Emilio

Durrant, James R.

机构：

[1] Autonomous Univ Madrid, Fac Ciencias, Dept Quim Organ, E-28049 Madrid, Spain

[2] Imperial Coll London, Ctr Elect Mat & Devices, Dept Chem, London SW7 2AY, England

[3] Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 30期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/ja0722980

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photoinduced electron injection in dye sensitized TiO2 is a critical step in the function of dye sensitized solar cells. High electron injection quantum yields are a requirement to obtain efficient devices. While high electron injection quantum yields are usually linked to ultrafast electron-transfer dynamics (in the fs-ps timescales), the latter are not a requirement. We present here a system, Ru-phthalocyanine sensitized TiO2, where slow electron injection (k (inj) approximate to 450 ns(-1)) and efficient electron injection are compatible owing to the long lifetime of the injecting state, the Ru-phthalocyanine triplet state. Ru-phthalocyanine dyes are attractive sensitizers because they absorb strongly in the red and their axial ligands hinder the formation of aggregates.

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页码：9250 / +

页数：3

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