Effect of π-linkers on phenothiazine sensitizers for dye-sensitized solar cells

被引：42
作者：
Buene, Audun Formo [1 ]
Uggerud, Nora [1 ]
Economopoulos, Solon P. [1 ]
Gautun, Odd R. [1 ]
Hoff, Bard Helge [1 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Chem, Hogskoleringen 5, NO-7491 Trondheim, Norway
来源：
DYES AND PIGMENTS | 2018年 / 151卷
关键词：
Phenothiazine dyes; Dye-sensitized solar cells; pi-spacer; Auxiliary donor; Furan; FREE ORGANIC-DYES; HIGH-EFFICIENCY; PERFORMANCE; DESIGN; DONOR; DSSC;
D O I：
10.1016/j.dyepig.2018.01.011
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Eleven new dyes have been synthesized in order to investigate the effect of five different pi-spacers and two different auxiliary donors in phenothiazine-based sensitizers for dye-sensitized solar cells. The target molecules were synthesized in 5-7 steps from 10H-phenothiazine. Evaluation of the photovoltaic performance revealed that introducing a pi-spacer does not necessarily increase the power conversion efficiency. Still, dyes with a furan pi-spacer were found to be slightly more efficient compared to their thiophene counterparts, and more efficient than no spacer. Dyes with phenyl based pi-spacers resulted in less efficient solar cells, and especially so when incorporating two fluorine atoms. Surprisingly, introducing an additional electron donating group in the auxiliary donor had no pronounced effect on the photovoltaic performance of the dyes.
引用
收藏
页码：263 / 271
页数：9
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