Disclosed are a difluoro benzotriazolyl solar cell polymeric material and preparation method and use thereof; the copolymer has a structure as represented by formula (I), wherein both R1 and R2 are alkyls from C1 to C20, and n is an integer from 10 to 100. In the difluoro benzotriazolyl solar cell polymeric material of the present invention, because the 1, 2, 3-benzotriazole copolymer contains two fluorine atoms, the HOMO energy level will be reduced by 0.11 eV while the fluorine-substituted 1, 2, 3-benzotriazole has two imido groups with strong electron -withdrawing property; the fluorine-substituted 1, 2, 3-benzotriazole is a heterocyclic compound with strong electron-withdrawing property, and an alkyl chain can be easily introduced to the N-position of the N-H bond of the benzotriazole; the functional group of the alkyl chain can improve solar energy conversion efficiency, thus solving the low efficiency problem of polymer solar cells.
本发明公开了一种二
氟苯并三唑太阳能电池聚合物材料及其制备方法和用途;该共聚物具有式(I)表示的结构,其中R1和R2均为C1至C20的烷基,n为10至100的整数。在本发明的二
氟苯并三唑太阳能电池聚合物材料中,由于 1,2,3-苯并三唑共聚物含有两个
氟原子,HOMO 能级将降低 0.11 eV,而
氟取代的1,2,3-苯并三唑具有两个具有强吸电子性的亚
氨基;
氟取代的1,2,3-苯并三唑是具有强吸电子性的
杂环化合物,在苯并三唑的N-H键的N位上容易引入烷基链,烷基链的官能团可以提高太阳能转换效率,从而解决聚合物太阳能电池效率低的问题。