Department of New Material Chemistry, Korea University, Jochiwon, Chungnam 339-700, Korea.
Inorg Chem. 2011 Nov 21;50(22):11340-7. doi: 10.1021/ic200872a. Epub 2011 Oct 17.
A new class of cyclometalated ruthenium sensitizers incorporating a ĈNN ligand and conjugated 2,2'-bipyridine in the ancillary ligand have been designed and synthesized. The photovoltaic performance of JK-206 using an electrolyte containing 0.6 M 1,2-dimethyl-3-propylimidazolium iodide, 0.05 M I(2), 0.1 M LiI, and 0.5 M tert-butylpyridine in CH(3)CN gave a short-circuit photocurrent density of 19.63 mA cm(-2), an open-circuit voltage of 0.74 V, and a fill factor of 0.72, affording an overall conversion efficiency of 10.39%. The efficiency is the highest one reported for dye-sensitized solar cells based on the cyclometalated ruthenium sensitizer of the type ĈNN. Moreover, the same device using a polymer gel electrolyte exhibited a remarkable stability under 1000 h of light soaking at 60 °C, retaining 91% of the initial efficiency of 7.14%.
一种新型的包含 ĈNN 配体和辅助配体中共轭 2,2'-联吡啶的偕二茂铁钌敏化剂已被设计和合成。使用含有 0.6 M 1,2-二甲基-3-丙基碘化咪唑、0.05 M I(2)、0.1 M LiI 和 0.5 M 叔丁基吡啶的 CH(3)CN 电解质的 JK-206 的光伏性能给出了 19.63 mA cm(-2)的短路光电流密度、0.74 V 的开路电压和 0.72 的填充因子，总转换效率为 10.39%。该效率是基于 ĈNN 型偕二茂铁钌敏化剂的染料敏化太阳能电池报告的最高效率之一。此外，使用聚合物凝胶电解质的相同器件在 60°C 下光照 1000 小时后表现出显著的稳定性，保留了初始效率 7.14%的 91%。
