Indeno[1,2- b ]indole-based organic dyes with different acceptor groups for dye-sensitized solar cells
作者:Xing Qian、Rucai Yan、Yongjie Hang、Yuezhen Lv、Lixin Zheng、Chong Xu、Linxi Hou
DOI:10.1016/j.dyepig.2016.12.028
日期:2017.4
Four new metal-free organic dyes QX15–18 based on indeno[1,2-b]indole have been successfully designed and synthesized. These D–π–A type dyes consist of an indeno[1,2-b]indole donor and a benzene or thiophene π-bridge. In an attempt to tune their photoelectric properties, the effects of different acceptor groups including cyanoacrylic acid, rhodanine-3-acetic acid, and 2-(1,1-dicyanomethylene)rhodanine
四个新的不含金属的有机染料QX15 - 18基于茚并[1,2- b ]吲哚已经成功地设计并合成。这些D–π–A型染料由茚并[1,2- b ]吲哚供体和苯或噻吩π-桥组成。为了调节其光电性能,已研究了包括氰基丙烯酸,若丹宁-3-乙酸和2-(1,1-二氰基亚甲基)若丹宁(DCRD)在内的不同受体基团的作用。带有氰基丙烯酸受体的染料QX15的最高V oc为813 mV,最高的J sc为11.0 mA cm -2,产生了6.29%的最高功率转换效率。同时,具有DCRD受体和噻吩π桥的染料QX18的J sc显着改善,为11.9 mA cm -2,这归因于其红移吸收光谱和高摩尔吸收系数。