A blue dye-sensitized solar cell based on a covalently bridged oligothiophene chromophore

被引：8
作者：
Demeter, Dora [1 ]
Melchiorre, Fabio [2 ]
Biagini, Paolo [2 ]
Po, Riccardo [2 ]
Roncali, Jean [1 ]
机构：
[1] Univ Angers, CNRS Moltech Anjou, Grp Linear Conjugated Syst, 2Bd Lavoisier, F-49045 Angers, France
[2] ENI SpA, Ctr Ric Energie Rinnovabili & Ambiente Ist Donega, Via G Fauser 4, I-28100 Novara, Italy
来源：
TETRAHEDRON LETTERS | 2016年 / 57卷 / 04期
关键词：
Dye-sensitized solar cells; Metal-free sensitizer; Charge-transfer; Color modulation; ORGANIC-DYES; TIO2; FILMS; EFFICIENCY; SYSTEMS; PERFORMANCE; DONOR; UNITS;
D O I：
10.1016/j.tetlet.2015.12.077
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Two quaterthiophenes with a terminal electron acceptor cyanoacrylic acid anchoring group have been. synthesized to serve as metal-free sensitizers in titanium dioxide-based dye-sensitized solar cells (DSSCs). The covalent bridging of the acceptor group with the adjacent thiophene ring by an ortho-phenylene unit leads to a large red shift of the internal charge-transfer band and to a strong decrease in its relative intensity. As a consequence of these spectral modifications, the color of the dye changes from orange to blue both in solution and after chemisorption on titanium dioxide. A preliminary evaluation of the bridged dye in DSSCs shows that the production of the blue color is associated with a decrease of the conversion efficiency of the cell. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：505 / 508
页数：4
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