Stable Dye‐Sensitized Solar Cells Based on Copper(II/I) Redox Mediators Bearing a Pentadentate Ligand
作者:Hailong Rui、Junyu Shen、Ze Yu、Lihua Li、Hongxian Han、Licheng Sun
DOI:10.1002/anie.202104563
日期:2021.7.12
In recent years, copper redox mediators have attracted growing interest in dye-sensitized solar cells (DSCs). However, experiments revealed that ubiquitously used Lewis-base additives in the electrolytes coordinate to the CuII species, which restricts further enhancement of device performance and stability. We report the application of copper complexes endowed with diamine-tripyridine pentadentate
近年来,铜氧化还原介质引起了人们对染料敏化太阳能电池 (DSC) 越来越大的兴趣。然而,实验表明,电解质中普遍使用的路易斯碱添加剂与 Cu II物质配位,这限制了器件性能和稳定性的进一步提高。我们报告了具有二胺-三吡啶五齿配体 [Cu(tpe)] 2+/+ (tpe= N-苄基-N , N',N' -tris(pyridin-2-ylmethyl)ethylenediamine)的铜配合物的应用[Cu(tme)] 2+/+ (tme= N -苄基-N , N',N'-三(6-甲基吡啶-2-基甲基)乙二胺),作为 DSC 中的氧化还原介质。实验测量表明,在 TBP 存在下,Cu(II) 配合物与五齿配体的配位环境保持不变,这与最先进的联吡啶对应物形成鲜明对比。基于 [Cu(tme)] 2+/+配合物的DSC表现出优异的长期稳定性,并在连续光照下 400 小时后保持超过 90% 的初始效率,其性能优于包含联吡啶对应物(小于80