Organic Sensitizers with Bridged Triphenylamine Donor Units for Efficient Dye-Sensitized Solar Cells

被引：50

作者：

Cai, Liping ^{[1
]}

Tsao, Hoi Nok ^{[2
]}

Zhang, Wei ^{[1
]}

Wang, Long ^{[1
]}

Xue, Zhaosheng ^{[1
]}

Graetzel, Michael ^{[2
]}

Liu, Bin ^{[1
,3
]}

机构：

[1] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore

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

[3] Inst Mat Res & Engn, Singapore 117602, Singapore

来源：

ADVANCED ENERGY MATERIALS | 2013年 / 3卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

electrochemistry; organic sensitizers; planarity; solar cells; bridged triphenylamine; RECOMBINATION; PERFORMANCE; CONVERSION; LIGHT;

D O I：

10.1002/aenm.201200435

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：

Bridged triphenylamine was chosen as the donor unit for metal-free organic sensitizers in dye-sensitized solar cells (DSSCs). The easily constructed alkene linkage between the donor and the spacer improves the molecule's delocalization and causes a large red shift in its absorption peaks. Planarization of the donor and the use of alkene linkage have proven powerful in extending the red light response of the sensitizer, leading to a significant enhancement in photocurrent density of the device. As a result, devices sensitized with target sensitizers LC-2 ( = 7.51%) and LC-3 ( = 8.00%) exhibited more than 70% efficiency increase over devices sensitized with the reference sensitizer LC-1 ( = 4.44%).

引用

页码：200 / 205

页数：6

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