Cid Juan-José, García-Iglesias Miguel, Yum Jun-Ho, Forneli Amparo, Albero Josep, Martínez-Ferrero Eugenia, Vázquez Purificación, Grätzel Michael, Nazeeruddin Mohammad K, Palomares Emilio, Torres Tomás
Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain.
Chemistry. 2009;15(20):5130-7. doi: 10.1002/chem.200801778.
A series of unsymmetrical zinc phthalocyanines bearing an anchoring carboxylic function linked to the phthalocyanine ring through different spacers were designed for dye-sensitised solar cells (DSSC). The modification of the spacer group allows not only a variable distance between the dye and the nanocrystalline TiO(2), but also a distinct orientation of the phthalocyanine on the semiconductor surface. The photovoltaic data show that the nature of the spacer group plays a significant role in the electron injection from the photo-excited dye into the nanocrystalline TiO(2) semiconductor, the recombination rates and the efficiency of the cells. The incident monochromatic photon-to-current conversion efficiency (IPCE) for phthalocyanines bearing an insulating spacer is as low as 9%, whereas for those with a conducting spacer an outstanding IPCE 80% was obtained.
设计了一系列不对称酞菁锌，其带有通过不同间隔基连接到酞菁环上的锚定羧基功能，用于染料敏化太阳能电池（DSSC）。间隔基团的修饰不仅允许染料与纳米晶TiO₂之间有可变距离，而且还允许酞菁在半导体表面有不同的取向。光伏数据表明，间隔基团的性质在光激发染料向纳米晶TiO₂半导体的电子注入、复合率和电池效率中起着重要作用。带有绝缘间隔基的酞菁的入射单色光子到电流转换效率（IPCE）低至9%，而对于带有导电间隔基的酞菁，获得了高达80%的出色IPCE。
