Aryl/hetero-arylethyne bridged dyes: the effect of planar π-bridge on the performance of dye-sensitized solar cells
作者:Jun-Ling Song、Pitchamuthu Amaladass、Shu-Hao Wen、Kalyan Kumar Pasunooti、An Li、Yao-Lun Yu、Xin Wang、Wei-Qiao Deng、Xue-Wei Liu
DOI:10.1039/c0nj00653j
日期:——
global AM 1.5 solar conditions. In addition, the experimental results show that π-conjugated bridge can extend the absorption of dye molecular and strong planarity (close-packing) can suppress the charge recombination at TiO2/electrolyte interface. Hence, the donor-π bridge-acceptor architectures can generate a unidirectional current flow, to some extent, which can enhance the cell performance.
我们设计并合成了三种不含金属的敏化剂,它们由二甲氧基取代的三苯胺作为供体, 氰基丙烯酸作为带有平面π桥的受体。测量这些染料的光子到电流的转换效率,作为用于DSSC分析的敏化剂。从这些实验获得的结果表明,D3的总转换效率最高,总效率为4.98%,短路电流密度(J sc)为11.29 mA cm -2,开路电压(V oc)为0.637 V,在标准的全球AM 1.5太阳条件下,其填充率为69.2%。另外,实验结果表明,π共轭桥可以扩展染料分子的吸收,强的平面性(紧密堆积)可以抑制TiO 2上的电荷复合/电解质界面。因此,施主-π桥-受体体系结构可以在某种程度上产生单向电流,这可以提高电池性能。