Nonplanar Organic Sensitizers Featuring a Tetraphenylethene Structure and Double Electron-Withdrawing Anchoring Groups

被引：35
作者：
Zhang, Fangshuai [1 ,2 ]
Fan, Jie [1 ]
Yu, Huijuan [1 ]
Ke, Zhuofeng [1 ]
Nie, Changming [2 ]
Kuang, Daibin [1 ]
Shao, Guang [1 ]
Su, Chengyong [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
[2] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China
来源：
JOURNAL OF ORGANIC CHEMISTRY | 2015年 / 80卷 / 18期
基金：
中国国家自然科学基金;
关键词：
AGGREGATION-INDUCED EMISSION; SOLAR-CELLS; HIGHLY EFFICIENT; DYE; TRIPHENYLAMINE; BEARING; DONORS; PERFORMANCE; DERIVATIVES; CARBAZOLE;
D O I：
10.1021/acs.joc.5b01140
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Two metal-free organic sensitizers containing two N,N-diethylaniline (DEA) moieties and a twisted 1,1,2,2-tetraphenylethene (TPE) structure, dye SD with one anchoring group and dye DD with two anchoring groups, were synthesized and applied in dye-sensitized solar cells (DSSCs). The introduction of a nonplanar TPE structure was used to form a series of propeller-like structures and reduce the tendency of dyes to randomly aggregate on TiO2 surface, but without importing an aggregation-induced emission (AIE) property. The thermal stabilities, UV-vis absorption spectra, electrochemical properties, and photovoltaic parameters of DSSCs with these two dyes were systematically studied and compared with each other. The overall conversion efficiencies (eta) of 4.56% for dye SD and 6.08% for dye DD were obtained under AM 1.5 G irradiation.
引用
收藏
页码：9034 / 9040
页数：7
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