Thiocyanate-Free Ru(II) Sensitizers with a 4,4′-Dicarboxyvinyl-2,2′-bipyridine Anchor for Dye-Sensitized Solar Cells
作者:Kuan-Lin Wu、Wan-Ping Ku、Sheng-Wei Wang、Aswani Yella、Yun Chi、Shih-Hung Liu、Pi-Tai Chou、Mohammad K. Nazeeruddin、Michael Grätzel
DOI:10.1002/adfm.201201876
日期:2013.5.13
of thiocyanate‐free Ru(II) sensitizers with 4,4′‐dicarboxyvinyl‐2,2′‐bipyridine anchor and two trans‐oriented pyrid‐2‐yl pyrazolate (or triazolate) functional chromophores is synthesized, characterized, and evaluated in dye‐sensitized solar cells (DSCs). Despite their enhanced red response and absorptivity when compared to the parent sensitizer TFRS‐2 that possesses standard 4,4′‐dicarboxyl‐2,2′‐bipyridine
合成,表征和表征了新型的新型无硫氰酸盐Ru(II)敏化剂,其具有4,4'-二羧基乙烯基-2-2,2'-联吡啶锚定和两个反式吡啶-2-基吡唑并(或三重氮)官能发色团。在染料敏化太阳能电池(DSC)中进行了评估。与具有标准4,4'-二羧基-2,2'-联吡啶锚定的母敏剂TFRS-2相比,尽管它们具有增强的红色响应和吸收能力,但新合成的羧基乙烯基酯-的最佳转化效率为η = 9.82%。吡唑酸酯敏化剂TFRS-11 – TFRS-13在短路电流密度(J SC),开路电压(V OC)和功率转换效率(η),后者记录在5.60%至7.62%的范围内。在器件效率的降低归因于在TiO这些敏化剂的包装不良的组合2表面和不太积极的基态的氧化电势,其中,分别,增加电荷重组与I 3 -在电解质和通过阻碍敏化剂的再生我-阴离子。后一种障碍可以通过用三唑酸酯代替吡唑酸酯来部分规避,从而形成TFRS-14敏化剂,从而表现出改善的J