Synthesis and Characterization of New Poly(thieno[3,4-<i>d</i>]thiazole) Derivatives for Photovoltaic Applications
作者:Nicolas Allard、Serge Beaupré、Badrou Réda Aïch、Ahmed Najari、Ye Tao、Mario Leclerc
DOI:10.1021/ma201360r
日期:2011.9.27
We report the synthesis of new push–pull conjugated polymers for bulk heterojunction solar cells based on benzo[1,2-b:4,5-b′]dithiophene (push) and thieno[3,4-d]thiazole (TTz) (pull) derivatives. Stille polycondensation between distannyl-BDT derivatives with 4,6-dibromo-2-octylthieno[3,4-d]thiazole led to two alternating copolymers, namely PBDTTTz-1 and PBDTTTz-2, which have a bandgap of 1.8 and 1
我们报告了基于苯并[1,2- b:4,5- b' ]二噻吩(push)和噻吩并[3,4- d ]噻唑(TTz)的用于体异质结太阳能电池的新型推挽共轭聚合物的合成(拉)衍生物。distannyl-BDT衍生物与4,6-二溴-2-辛基噻吩并[3,4- d ]噻唑之间的斯蒂勒缩聚反应产生了两种交替共聚物,即PBDTTTz-1和PBDTTTz-2,其带隙为1.8和1.7 eV,分别。两种共聚物在空气中均稳定,HOMO能级对于PBDTTTz-1为-5.3 eV,对于PBDTTTz-2为-5.4 eV。。二者的共聚物已经在本体异质结太阳能电池,和初步结果进行了测试(没有任何优化过程)示出有前途的1.4%的功率转换效率为PBDTTTz-1和1.7%为PBDTTTz-2 。