Metal-free organic dyes derived from triphenylethylene for dye-sensitized solar cells: tuning of the performance by phenothiazine and carbazole

被引：142

作者：

Chen, Chengjian ^{[1
]}

Liao, Jin-Yun ^{[1
]}

Chi, Zhenguo ^{[1
]}

Xu, Bingjia ^{[1
]}

Zhang, Xiqi ^{[1
]}

Kuang, Dai-Bin ^{[1
]}

Zhang, Yi ^{[1
]}

Liu, Siwei ^{[1
]}

Xu, Jiarui ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, PCFM Lab,State Key Lab Optoelect Mat & Technol, DSAPM Lab,MOE Key Lab Bioinorgan & Synthet Chem,K, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 18期

基金：

中国国家自然科学基金;

关键词：

AGGREGATION-INDUCED-EMISSION; NANOCRYSTALLINE TIO2 FILMS; HIGH-EFFICIENCY; RECOMBINATION; TRIARYLAMINE; ELECTROLYTE;

D O I：

10.1039/c2jm30254c

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：

Four novel D-D-pi-A configuration metal-free organic dyes (C3, P2, C2 and P3) with triphenylethylene phenothiazine moieties or triphenylethylene carbazole moieties as additional electron donors for dye-sensitized solar cells (DSSCs) have been synthesized. The cells based on C3, P2, C2 and P3 dyes with efficiencies of 2.14%, 2.69%, 5.51% and 6.55%, respectively, are obtained. The P3 based cell exhibits the highest efficiency of 6.55% accompanied by a short-circuit current density (J(sc)) of 12.18 mA cm(-2), a rather high open-circuit photovoltage (V-oc) of 826 mV, and a fill factor (ff) of 0.65, performances which are remarkable in the DSSCs based on metal-free organic dyes. The twisted non-planar configuration in P3 decelerates the charge recombination in the charge-separated state and hence contributes to the improvement of the performance of DSSCs.

引用

页码：8994 / 9005

页数：12

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