An alternative efficient redox couple for the dye-sensitized solar cell system

被引：283

作者：

Nusbaumer, H ^{[1
]}

Zakeeruddin, SM ^{[1
]}

Moser, JE ^{[1
]}

Grätzel, M ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Lab Photon & Interfaces, Inst Mol & Biol Chem, CH-1015 Lausanne, Switzerland

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2003年 / 9卷 / 16期

关键词：

cobalt; redox chemistry; sensitizers; solar cells; tridentate ligands;

D O I：

10.1002/chem.200204577

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of new cobalt complexes [Co(LLL)(2)X-2] were synthesized and evaluated as redox mediators for dye-sensitized nanocrystalline TiO2 Solar cells. The structure of the ligand and the nature of the counterions were found to influence the photovoltaic performance. The one-electron-transfer redox mediator [Co(dbbiP)(2)](ClO4)(2) (dbbip = 2,6- bis(1'-butylbenzimidazol-2'-yl)pyridine) performed best among the compounds investigated. Photovoltaic cells incorporating this redox mediator yielded incident photon-to-current conversion efficiencies (IPCE) of up to 80%. The overall yield of light-to-electric power conversion reached 8 % under simulated AM1.5 sunlight at 100 W m(-2) intensity and more than 4 % at 1000 W m(-2). Photoelectrodes coated with a 2 mum thick nanoporous layer and a 4 mum thick light-scattering layer, sensitized with a hydrophobic ruthenium dye, gave the best results.

引用

页码：3756 / 3763

页数：8

共 47 条

[1] SYNTHESIS OF SOME IMIDAZOLE-DERIVED AND PYRAZOLE-DERIVED CHELATING-AGENTS [J].