Photovoltage Improvement for Dye-Sensitized Solar Cells via Cone-Shaped Structural Design

被引：159

作者：

Ning, Zhijun ^{[1
,2
]}

Zhang, Qiong ^{[1
,2
,3
]}

Pei, Hongcui ^{[1
,2
]}

Luan, Jiangfeng ^{[4
]}

Lu, Changgui ^{[4
]}

Cui, Yiping ^{[4
]}

Tian, He ^{[1
,2
]}

机构：

[1] E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China

[2] E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

[3] Royal Inst Technol, Sch Biotechnol, S-10691 Stockholm, Sweden

[4] SE Univ Nanjing, Adv Photon Ctr, Nanjing 210096, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 23期

关键词：

NANOCRYSTALLINE TIO2 FILMS; ORGANIC-DYES; HIGHLY EFFICIENT; CONVERSION-EFFICIENCY; CHARGE SEPARATION; ELECTRON-TRANSFER; LIQUID-ELECTROLYTE; COUMARIN DYE; RECOMBINATION; DONOR;

D O I：

10.1021/jp902408z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this article, three truexene-based dyes with 2-cyanoacrylic acid as acceptor and starburst triarylamine as donor (S5, S6, and S7) were conveniently synthesized and used for dye-sensitized solar cells (DSSCs). A compact sensitizer layer is molecular interfacially engineered on the TiO2 surface via cone-shaped sensitizers. As a result, the approach of the electrolyte to the TiO2 surface is blocked significantly by the compact sensitizer layer formed and the charge recombination in the DSSCs is proved to be retarded effectively. The monochromatic incident photon-to-current conversion efficiency of these sensitizers is near 90%. In addition, S7-sensitized solar cells yield an open-circuit voltage of 752 mV and it fill factor of 0.70, which are even higher than those of N719 under the same conditions.

引用

页码：10307 / 10313

页数：7

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