Branched and bulky substituted ruthenium sensitizers for dye-sensitized solar cells
作者:M. Sánchez Carballo、M. Urbani、A. Kumar Chandiran、D. González-Rodríguez、P. Vázquez、M. Grätzel、M. K. Nazeeruddin、T. Torres
DOI:10.1039/c4dt01357c
日期:——
We report on the synthesis, and photovoltaic performances of four novel Ru(II)-bipyridine heteroleptic complexes TT206–209, incorporating branched and bulkier alkyl chains compared to their linear analogues C106 and CYC-B11 previously reported. In both series, we found that dyes containing 2-methyl-hex-2-yl substitution gave better performances than 1,1-dipropylbutyl. The best overall performance over the four dyes was obtained for TT207 (CYC-B11 analogue), which contains 2-methylhex-2-yl type substitution, achieving an overall PCE of 8.5%. Furthermore, the optimization of TT207/DSSCs, with respect to the dye-uptake solvent and electrolyte composition, led to a maximum PCE of 9.1% under AM1.5 G standard conditions.
我们报告了四种新型Ru(II)-联吡啶配合物TT206–209的合成及其光伏性能,这些配合物相比于之前报道的线性类似物C106和CYC-B11, Incorporating了更粗大且分支的烷基链。在这两个系列中,我们发现含有2-甲基-己-2-基取代的染料的性能优于1,1-二丙基丁基。在这四种染料中,TT207(CYC-B11的类似物)表现最佳,其包含2-甲基己-2-基类型的取代,整体光电转换效率(PCE)达到了8.5%。此外,对TT207/DSSCs的优化,涉及染料吸取溶剂和电解质成分的选择,使得在AM1.5 G标准条件下,最大光电转换效率提升至9.1%。