High Excitation Transfer Efficiency from Energy Relay Dyes in Dye-Sensitized Solar Cells

被引：93

作者：

Hardin, Brian E. ^{[1
]}

Yum, Jun-Ho ^{[2
]}

Hoke, Eric T. ^{[3
]}

Jun, Young Chul ^{[3
]}

Pechy, Peter ^{[2
]}

Torres, Tomas ^{[4
]}

Brongersma, Mark L. ^{[1
]}

Nazeeruddin, Md. Khaja ^{[2
]}

Graetzel, Michael ^{[2
]}

McGehee, Michael D. ^{[1
]}

机构：

[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[2] Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

[3] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[4] Univ Autonoma Madrid, Fac Ciencias, Dept Quim Organ C I, E-28049 Madrid, Spain

来源：

NANO LETTERS | 2010年 / 10卷 / 08期

关键词：

Solar cell; energy transfer; dye-sensitized dolar cell; energy relay dye; titania; CONVERSION EFFICIENCY; MESOPOROUS MATERIALS; MORPHOLOGY;

D O I：

10.1021/nl1016688

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The energy relay dye, 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM), was used with a near-infrared sensitizing dye, TT1, to increase the overall power conversion efficiency of a dye-sensitized solar cell (DSC) from 3.5% to 4.5%. The unattached DCM dyes exhibit an average excitation transfer efficiency (ETE) of 96% inside TT1-covered, mesostructured TiO2 films. Further performance increases were limited by the solubility of DCM in an acetonitrile based electrolyte. This demonstration shows that energy relay dyes can be efficiently implemented in optimized dye-sensitized solar cells, but also highlights the need to design highly soluble energy relay dyes with high molar extinction coefficients.

引用

页码：3077 / 3083

页数：7

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