Dye Molecular Structure Device Open-Circuit Voltage Correlation in Ru(II) Sensitizers with Heteroleptic Tridentate Chelates for Dye-Sensitized Solar Cells
作者:Kuan-Lin Wu、Cheng-Hsuan Li、Yun Chi、John N. Clifford、Lydia Cabau、Emilio Palomares、Yi-Ming Cheng、Hsiao-An Pan、Pi-Tai Chou
DOI:10.1021/ja300828f
日期:2012.5.2
Dicarboxyterpyridine chelates with π-conjugated pendant groups attached at the 5- or 6-position of the terminal pyridyl unit were synthesized. Together with 2,6-bis(5-pyrazolyl)pyridine, these were used successfully to prepare a series of novel heteroleptic, bis-tridentate Ru(II) sensitizers, denoted as TF-11-14. These dyes show excellent performance in dye-sensitized solar cells (DSCs) under AM1.5G
合成了在末端吡啶基单元的 5 或 6 位连接有 π 共轭侧基的二羧基三联吡啶螯合物。与 2,6-双(5-吡唑基)吡啶一起,这些被成功地用于制备一系列新型杂配、双三齿 Ru(II) 敏化剂,表示为 TF-11-14。与含有 [Ru(Htctpy)(NCS)(3) 的参考器件相比,这些染料在 AM1.5G 模拟阳光下以 100 mW cm(-2) 的光强度在染料敏化太阳能电池 (DSC) 中显示出优异的性能][TBA](3) (N749),其中 H(3)tctpy 和 TBA 是 4,4',4"-tricarboxy-2,2':6',2"-三联吡啶和四正丁基铵阳离子,分别。特别是,敏化剂 TF-12 的短路光电流为 19.0 mA cm(-2),开路电压 (V(OC)) 为 0.71 V,填充因子为 0.68,提供 9.21% 的整体转换效率。与 N749 相比,通过添加 π 共轭侧基赋予 TF