Y-shaped dyes based on triphenylamine for efficient dye-sensitized solar cells

被引：51

作者：

Jia, Junhui ^{[1
]}

Cao, Kaiyu ^{[1
]}

Xue, Pengchong ^{[1
]}

Zhang, Yuan ^{[2
]}

Zhou, Huipeng ^{[1
]}

Lu, Ran ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Supramol Struct & Mat, Coll Chem, Changchun 130012, Peoples R China

[2] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China

来源：

TETRAHEDRON | 2012年 / 68卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Dye-sensitized solar cells (DSSCs); Triphenylamine; Y-shaped conformation; Carbazole; Phenothiazine; FREE ORGANIC-DYES; HIGHLY EFFICIENT; CONVERSION-EFFICIENCY; DONOR; PERFORMANCE; TRIARYLAMINE; CHROMOPHORES; MOLECULES; THIOPHENE; ACCEPTOR;

D O I：

10.1016/j.tet.2012.02.077

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Three new triphenylamine-based dyes with Y-shaped conformation bearing triphenylamino-vinyl, 10-octy1-10H-phenothiazine-vinyl and 9-octy1-9H-carbazole-vinyl as arms (TT, TP, and TC) have been synthesized. From electrochemical investigations it is found that they can be employed in DSSCs due to the balanced HOMO and LUMO energy levels. Notably, the photo-to-electrical conversion efficiency of the DSSCs sensitized with branched TT, TP, and TC reach 5.12%, 4.84%, and 3.63%, which are higher than that sensitized with T (2.79%), and the DSSC sensitized with TT shows higher IPCE response and better photovoltaic performances (J(sc)=12.37 mA/cm(,)(2) V-oc=0.72 V and ff=0.58) than others. These results reveal that the introduction of branched Y-shaped extended pi-conjugated donors to D-pi-A dyes cannot only enlarge the spectral response range, but also suppress the molecular aggregation on TiO2 films to a certain extent, which would enhance the performance of DSSCs. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：3626 / 3632

页数：7

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