Effect of nature of anchoring groups on photosensitization behavior in unsymmetrical squaraine dyes
作者:Gururaj M. Shivashimpi、Shyam S. Pandey、Rie Watanabe、Naotaka Fujikawa、Yuhei Ogomi、Yoshihiro Yamaguchi、Shuzi Hayase
DOI:10.1016/j.jphotochem.2013.09.004
日期:2014.1
indole based unsymmetrical squaraine dyes bearing various anchoring groups such as carboxylate (SQ-A), cyanoacrylate (SQ-B) and thiophene-bridged cyanoacrylate (SQ-C) were synthesized and evaluated for their performance in dye sensitized solar cells (DSSCs) under similar experimental conditions. Electronic absorption spectral investigation on thin films of these dyes adsorbed on nanoporous TiO2 reveals
合成了一系列带有各种锚定基团(例如羧酸根(SQ-A),氰基丙烯酸酯(SQ-B)和噻吩桥基氰基丙烯酸酯(SQ-C))的吲哚基不对称方酸染料,并对其在染料敏化太阳能电池中的性能进行了评估( DSSC)。这些染料薄膜在纳米多孔TiO 2上的电子吸收光谱研究当引入氰基丙烯酸酯官能团作为锚定基团时,其揭示了相对增强的光谱展宽。虽然在主要发色团和锚定基团(SQ-C)之间掺入了噻吩π桥,虽然导致了远红区的红移,但由于染料聚集相对增强,阻碍了光子的收集。直接取代并带有芳族发色团的带有氰基丙烯酸酯锚定基团的不对称方酸染料(SQ-B)表现出最佳的光伏性能,在模拟太阳辐射下的光转换效率为5.03%。