Ruthenium complexes as sensitizers with phenyl-based bipyridine anchoring ligands for efficient dye-sensitized solar cells
作者:Yin Huang、Wang-Chao Chen、Xian-Xi Zhang、Rahim Ghadari、Xia-Qin Fang、Ting Yu、Fan-Tai Kong
DOI:10.1039/c8tc03288b
日期:——
Two ruthenium complex dye sensitizers, Ru(NCS)2 LL′, in which L refers to 4,4′-dinonyl-2,2′-bipyridine and L′ stands for 4,4′-di(m-X-benzoic acid)-2,2′-bipyridine (X = H (RC-73), F (RC-76)), were designed and synthesized to investigate the influence of introducing phenyl-based bipyridine anchoring ligands and the performance of dye-sensitized solar cells based on them. With the modification of conventional
两种钌络合物染料敏化剂Ru(NCS)2 LL',其中L代表4,4'-二壬基-2,2'-联吡啶,L'代表4,4'-二(m -X-苯甲酸) )-2,2'-联吡啶(X = H(RC-73),F(RC-76))被设计和合成,以研究引入苯基基联吡啶锚定配体的影响以及染料敏化太阳能电池的性能基于它们的单元格。通过用基于苯基的联吡啶单元对常规的4,4'-二羧酸-2,2'-联吡啶基锚定配体进行修饰,两种RC染料均显示出优异的光物理和电化学性能,从而获得出色的器件性能。显着地,随着X的吸电子能力的增强,RC-76在吸收强度,氧化还原电势,电子传输和染料再生方面具有更令人满意的性能,这可以通过紫外可见吸收光谱法,循环伏安法测量,密度泛函理论计算和瞬态吸收光谱法得到证实。基于RC-76的设备实现了17.52 mA cm -2的短路电流密度和9.23%的功率转换效率。动力学研究和电阻抗光谱学解释了与标准Z907染