Dye-sensitized solar cell utilizing organic dyads containing triarylene conjugates
作者:Yuan Jay Chang、Tahsin J. Chow
DOI:10.1016/j.tet.2009.04.024
日期:2009.6
A series of organic dipolar compounds containing a donor (D), a bridge (B), and an acceptor (A), forming a D–B–A type of dyads, were synthesized by convenient methods and were utilized successfully on dye-sensitized solar cells. The central bridges were made of three linearly connected arylene groups, i.e., phenylenes or thiophenylenes. The donor groups were aromatic amines, i.e., either a diphenylamine
通过便捷的方法合成了一系列包含给体(D),桥(B)和受体(A)的有机偶极化合物,形成了一种D–B–A型二元体,并成功地用于染料敏化太阳能电池。中心桥由三个线性连接的亚芳基基团,即亚苯基或噻吩基制成。供体基团是芳族胺,即二苯胺或萘基苯胺基团。受体基团是氰基丙烯酸,可以固定在TiO 2的表面上在光伏设备中。这些设备表现出色,典型的量子效率为5–7%,最佳入射光子到电流的转换效率(IPCE)超过80%。用萘基苯胺供体基团制得的装置的性能略好于用二苯胺供体基团制得的装置。含有亚苯基-噻吩基-亚苯基桥基的化合物的性能要优于具有其他三芳基键合的化合物。使用具有B3LYP功能的时变密度泛函理论(TDDFT)模型分析了它们的光化学行为。