Combination of Cobalt and Iron Polypyridine Complexes for Improving the Charge Separation and Collection in Ru(terpyridine)2-Sensitised Solar Cells

被引：50

作者：

Caramori, Stefano ^{[1
]}

Husson, Jerome ^{[3
]}

Beley, Marc ^{[2
]}

Bignozzi, Carlo A. ^{[1
]}

Argazzi, Roberto ^{[4
]}

Gros, Philippe C. ^{[2
]}

机构：

[1] Univ Ferrara, Dipartimento Chim, I-44100 Ferrara, Italy

[2] Nancy Univ, CNRS, SRSMC, F-54506 Vandoeuvre Les Nancy, France

[3] Univ Franche Comte, UMR 6213, Inst UTINAM, F-25030 Besancon, France

[4] CNR, ISOF, Dept Chem, I-44100 Ferrara, Italy

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2010年 / 16卷 / 08期

关键词：

cobalt; electron collection; iron; recombination; solar cells; SENSITIZED PHOTOVOLTAIC CELLS; ELECTRON-TRANSFER; RUTHENIUM COMPLEXES; REDOX COUPLE; DYES; EFFICIENCY; THIOPHENE; MEDIATOR; FILMS;

D O I：

10.1002/chem.200902761

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mixtures of polypyridine Fe-II and Co-II complexes are used as electron mediators in Ru-thienyltpy-sensitised solar cells (tpy = terpyridine). The use of the metalorganic redox couples allows for improved charge-collection efficiency with respect to the classical iodide/iodine couple which, when associated to Ru-tpy(2) dyes, usually produces poor performance. The improved charge collection is explained by a combination of effective dye regeneration and decreased recombination with the oxidised electrolyte on the basis of data obtained by transient spectroscopy and photoelectrochemical measurements. The efficiency of the regeneration cascade is also critically dependent upon the ability of the Co-II complex to intercept Fe-III centres, as clearly indicated by chronocoulometry experiments.

引用

页码：2611 / 2618

页数：8

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