Dye-sensitized solar cell utilizing organic dyads containing triarylene conjugates

被引:108
作者
Chang, Yuan Jay [1 ]
Chow, Tahsin J. [1 ,2 ]
机构
[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
[2] Acad Sinica, Inst Chem, Taipei 115, Taiwan
关键词
Dye-sensitized solar cell; Photovoltaic; Triarylene; Light harvesting; Charge transfer; PHOTOINDUCED ELECTRON-TRANSFER; CROSS-COUPLING REACTIONS; PHOTOELECTROCHEMICAL PROPERTIES; COUMARIN-DYE;
D O I
10.1016/j.tet.2009.04.024
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A series of organic dipolar compounds containing a donor (D), a bridge (B), and an acceptor (A), forming a D-B-A type of dyads, were synthesized by convenient methods and were utilized successfully on dye-sensitized solar cells. The central bridges were made of three linearly connected arylene groups, i.e., phenylenes or thiophenylenes. The donor groups were aromatic amines, i.e either a diphenylamine or a naphthylphenylamine group. The acceptor group was a cyanoacrylic acid, which can be anchored onto the surface of TiO2 in a photovoltaic device. These devices performed remarkably well, with a typical quantum efficiency of 5-7%, and optimal incident photon to current conversion efficiency (IPCE) exceeding 80%. The devices made with a naphthylphenylamine donor group performed slightly better than those made with a diphenylamine donor group. Compounds containing a phenylene-thiophenylene-phenylene bridge group performed better than those with other kinds of triarylene linkages. Their photochemical behaviors were analyzed by using time-dependent density functional theory (TDDFT) models with the B3LYP functional. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4726 / 4734
页数:9
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