中文版 | English
CSpace
Thiazole-Functionalized Terpolymer Donors Obtained via Random Ternary Copolymerization for High-Performance Polymer Solar Cells
Liao, Zhihui1,2; Yang, Ke3; Hou, Licheng1; Li, Jun4; Lv, Jie1; Singh, Ranbir5,6; Kumar, Manish5,6; Chen, Qianqian1; Dong, Xiyue1; Xu, Tongle1
2020-10-27
摘要Random ternary copolymerization is a simple but effective strategy to develop new efficient polymer donors for polymer solar cell application. Herein, a series of new copolymers, OPz1, OPz2, OPz3, and OPz4, containing varying fraction of ester-substituted thiazole (E-Tz) as the third component to the widely studied PM6 copolymer, were synthesized. Incorporation of the E-Tz unit is found to significantly improve the molecular planarity, energy levels, and light-harvesting range of the polymer donors. Impressively, subtle regulation of the E-Tz content realized a dramatic enhancement of all the device parameters with a champion power conversion efficiency of 16.28% achieved with the OPz1:Y6 device. The performance improvement was attributed to the reduced energy loss, the downshifted energy levels and optimized charge transport. Our results demonstrated that the E-Tz unit is a promising building block, and random ternary copolymerization is a powerful strategy for photovoltaic materials development.
DOI10.1021/acs.macromol.0c01462
发表期刊MACROMOLECULES
ISSN0024-9297
卷号53期号:20页码:9034-9042
通讯作者Lu, Shirong(lushirong@cigit.ac.cn) ; Xiao, Zeyun(xiao.z@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000586789500032
语种英语