Sensitization of nanocrystalline TiO2 with black absorbers based on Os and Ru polypyridine complexes

被引:183
作者
Altobello, S
Argazzi, R
Caramori, S
Contado, C
Da Fré, S
Rubino, P
Choné, C
Larramona, G [1 ]
Bignozzi, CA
机构
[1] IMRA Europe, Sophia Antipolis, France
[2] Univ Ferrara, Dipartimento Chim, I-44100 Ferrara, Italy
[3] Univ Ferrara, ISOF, CNR, I-44100 Ferrara, Italy
关键词
D O I
10.1021/ja053438d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
New metal complexes of the type [M(H3tcterpy)LY]+ (where M = Os(II) or Ru(II), L = substituted or unsubstituted bipyridine or pyridylquinoline, and Y = Cl-, I-, or SCN-) have been designed, synthesized, and characterized in view of their application for dye-sensitized solar cells (DSSCs). The Os dyes show a very broad absorption, and correspondingly, the DSSCs show an unprecedented spectral response in the NIR, with an onset at 1100 nm, reaching values of about 50% at 900 nm. The integrated photocurrent of some of such Os dyes is similar to that of the well-known [Ru(Htcterpy)(NCS)3](TBA) and superior to that of the [Ru(Hdcbpy)2(NCS)2](TBA)2 sensitizer. The Ru dyes show absorption and DSSC spectral response between those of the red and black dyes. Their advantage is their potential superior stability due to the reversible oxidative electrochemistry. Copyright © 2005 American Chemical Society.
引用
收藏
页码:15342 / 15343
页数:2
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