UMR-CNRS 5255 Institut des Sciences Moléculaires, Université de Bordeaux, 351 cours de la Libération, 33405 Talence, France.
ChemSusChem. 2011 Jun 20;4(6):731-6. doi: 10.1002/cssc.201100031. Epub 2011 May 17.
The synthesis of a series of novel organic photosensitizers based on modified triarylamine motives has been achieved. The new "push-pull" dyes, bearing one to three naphthyl units in place of phenyl rings, have been successfully obtained following original synthetic routes. The structural, optical and electrochemical properties of these chromophores were studied by combining crystallographic, experimental and theoretical data. We further present a systematic study of this series of dyes. When embedded in dye-sensitized solar cell devices, the new photosensitizers showed good spectral response with IPCE greater than 85% from 470 to 580 nm and overall power conversion efficiencies reaching 6.6%. One of these new sensitizers, containing one naphthyl attached to the π-conjugated linker and having phenyl rings on the outside, led to the highest molar extinction coefficient and energy conversion efficiency of the series while exhibiting higher electron lifetime.
已经实现了一系列基于三苯胺母体修饰的新型有机光敏剂的合成。通过原始的合成路线，成功地获得了带有一个至三个萘基单元取代苯基环的新型“推-拉”染料。通过结合晶体学、实验和理论数据，研究了这些生色团的结构、光学和电化学性质。我们进一步对这一系列染料进行了系统的研究。当嵌入染料敏化太阳能电池器件中时，这些新的光吸收剂表现出良好的光谱响应，在 470 至 580nm 范围内的 IPCE 大于 85%，整体功率转换效率达到 6.6%。这些新的敏化剂之一，含有一个连接到π共轭键上的萘基和外部的苯基环，导致该系列中具有最高的摩尔消光系数和能量转换效率，同时表现出更高的电子寿命。
