Two novel tris‐heteroleptic Ru–dipyrrinates were prepared and tested as sensitizers in the dye‐sensitized solar cell (DSSC). Under AM 1.5 sunlight, DSSCs employing these dyes achieved power conversion efficiencies (PCEs) of 3.4 and 2.2 %, substantially exceeding the value achieved previously with a bis‐heteroleptic dye (0.75 %). As shown by electrochemical measurements and DFT calculations, the improved
制备了两种新型的三异
氟氰菊酯,并在
染料敏化太阳能电池(DSSC)中作为敏化剂进行了测试。在
AM 1.5的日光下,使用这些
染料的DSSC的功率转换效率(PCE)分别为3.4和2.2%,大大超过了以前使用双杂多效
染料所达到的值(0.75%)。如电
化学测量和DFT计算所示,改进的PCE源自经过合成调谐的电子结构,该结构提供了更多的负激发态氧化还原电势和有利的电子注入TiO 2导带。电子注入通过纳秒瞬态吸收光谱进行定量,结果表明,
染料是最强的光还原剂,可实现最高的注入产率。