- Influence of the benzo[d]thiazole-derived π-bridges on the optical and photovoltaic performance of D-π-A dyes
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New metal-free organic sensitizers containing a benzo[d]thiazole or phenyl unit as the π-conjugated system, a triphenylamine as an electron donor, and a cyanoacrylic acid moiety as an electron acceptor were synthesized and used for dye-sensitized solar cells. Photophysical and electrochemical properties of these dyes were investigated, and their performances as sensitizers in solar cells were measured. The introduction of a benzo[d]thiazole unit into the molecular structure resulted in a high incident photon-to-current conversion efficiency (more than 70%) from 340 nm to 600 nm. One solar cell containing a benzo[d]thiazole unit, produced a η of 5.85% (JSC = 10.63 mA cm-2, VOC = 0.72 V, and ff = 0.77) under 100 mW cm -2 simulated AM 1.5 G solar irradiation.
- Ci, Zhenhua,Yu, Xiaoqiang,Bao, Ming,Wang, Chaolei,Ma, Tingli
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p. 619 - 625
(2013/03/14)
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- DYE COMPOUND AND DYE-SENSITIZED SOLAR CELL
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A dye compound is described, which is expressed by formula (I): wherein A1, A2 and A3 each independently represent a substituted or unsubstituted 1,4-phenylene or 2,5-thiophene group, and B1 and B2 each independently represent a substituted or unsubstituted aryl group. The dye compound is suitably used as a dye sensitizer in a dye sensitized solar cell (DSSC).
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Page/Page column 6
(2010/04/23)
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- Triaryl linked donor acceptor dyads for high-performance dye-sensitized solar cells
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The effect of changing substituents of organic dyes for their performance on dye-sensitized solar cells (DSSCs) is examined. These dyes consist of an aromatic amine donor group, a cyanoacrylic acid acceptor group, and a triaryl spacer group, while they ar
- Chang, Yuan Jay,Chow, Tahsin J.
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experimental part
p. 9626 - 9632
(2009/12/28)
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- Dye-sensitized solar cell utilizing organic dyads containing triarylene conjugates
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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.
- Chang, Yuan Jay,Chow, Tahsin J.
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experimental part
p. 4726 - 4734
(2009/10/09)
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