A set of new donor-π-acceptor organic PM dyes, bearing carbazole as electron donor and cyanoacrylic acid as electron acceptor, has been synthesized and fully characterized with particular focus on application in dye-sensitized solar cells (DSSCs). Importantly, a change in ‘linker’ structure resulted in the electron re-distribution in the oxidised dye, in general, and the localization of the ‘electron hole’, in particular, when compared with the MK2 benchmark. In addition, modifying the PM dyes with different lengths of alkoxy chains, that is, 1, 4, and 8 carbons, at the linkers strongly influences the access of the oxidised cobalt ions to the surface affecting recombination, which had an appreciable effect on dye-sensitized solar cell performances. While the performance of the PM dyes was 15-20% lower than MK2, they are considerably easier and less expensive to synthesize, offering excellent potential for future DSSC applications.

合成了一组以咔唑为电子给体，氰基丙烯酸为电子受体的新型供体-π-受体有机PM染料，并对其进行了充分表征，特别是在染料敏化太阳能电池（DSSCs）中的应用。重要的是，“连接子”结构的变化通常会导致电子在氧化染料中重新分布，尤其是与MK2基准相比时，“电子空穴”的定位会更加明显。另外，修改PM在接头处具有不同烷氧基链长度（即1、4和8个碳原子）的染料强烈影响氧化钴离子进入表面的能力，从而影响重组，这对染料敏化太阳能电池的性能产生了显着影响。虽然PM染料的性能比MK2低15-20％，但它们的合成非常容易且成本较低，为将来的DSSC应用提供了极好的潜力。