Effect of conjugated side groups on the photovoltaic performances of triphenylamine-based dyes sensitized solar cells
Effect of conjugated side groups on the photovoltaic performances of triphenylamine-based dyes sensitized solar cells
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DOI：
10.1016/j.dyepig.2015.09.025
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发表时间：
2016
影响因子：
4.5
通讯作者：
J. Long;Xunshan Liu;Huan Guo;Bin Zhao;Songting Tan
中科院分区：
文献类型：
--
作者：
J. Long;Xunshan Liu;Huan Guo;Bin Zhao;Songting Tan
设计并合成了三种噻吩π桥上带有共轭侧基的新型有机染料LD 1、LD 2和LD 3。通过将不同的共轭侧基引入到染料的噻吩π-桥部分中，已经成功地调节了染料的光物理、电化学和光伏性质。与具有非共轭侧基的类似染料相比，侧基共轭染料具有更宽的吸收光谱、更高的摩尔消光系数和更好的光伏性能。对于LD 2基DSSC，在AM 1.5 G照射（100 mW cm-2）下获得了7.71%的最大功率转换效率（PCE）。结果表明，通过选择合适的共轭侧基引入有机染料的π桥结构中，可以获得高性能的DSSC。
Three novel organic dyes (LD1,LD2andLD3)with conjugated side groups on the thiophene π-bridge are designed and synthesized for dye sensitized solar cells (DSSCs). The photophysical, electrochemical, and photovoltaic properties of the dyes have been successfully tuned by incorporating different conjugated side groups into the thiophene π-bridges moieties of dyes. Compared with the analogous dyes with non-conjugated side groups, the side group-conjugated dyes exhibited wider absorption spectra, higher molar extinction coefficients, and better photovoltaic performances. For theLD2-based DSSCs, the maximum power conversion efficiency (PCE) of 7.71% is obtained under AM 1.5 G irradiation (100 mW cm−2). The result demonstrates that high-performance DSSCs can be acquired by choosing suitable conjugated side groups into the π-bridges moieties of organic dyes.