Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (7): 20230146.doi: 10.7503/cjcu20230146

• Article • Previous Articles     Next Articles

Double-cable Conjugated Polymers with Rigid Linkers for Single-component Organic Solar Cells

FANG Haisheng1, LIANG Shijie1, XIAO Chengyi1, XIA Dongdong2(), LI Weiwei1()   

  1. 1.Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic?Inorganic Composites,College of Materials,Beijing University of Chemical Technology,Beijing 100029,China
    2.Institute of Applied Chemistry,Jiangxi Academy of Sciences,Nanchang 330096,China
  • Received:2023-03-29 Online:2023-07-10 Published:2023-05-06
  • Contact: XIA Dongdong, LI Weiwei E-mail:xiadongdong16@mails.ucas.ac.cn;liweiwei@iccas.ac.cn
  • Supported by:
    the Ministry of Science and Technology, China(2018YFA0208504);the Beijing Natural Science Foundation, China(JQ21006);the National Natural Science Foundation of China(92163128);the Fundamental Research Funds for the Central Universities, China(buctrc201828);the Open Project of State Key Laboratory of Organic-Inorganic Composites, China(oic-202201006);the Open Project of State Key Laboratory of Supramolecular Structure and Materials, China(sklssm202209);the Jiangxi Academy of Sciences, China(2022YSBG22031)

Abstract:

Two novel double-cable conjugated polymers, poly[2-(4-{3,3′-didodecyl-5′-[4-(1-{4-[5-(2-ethylhexyl)thiophen-2-yl]-8-[5-(heptan-3-yl)thiophen-2-yl]benzo[1,2-b∶4,5-b′]dithiophen-2-yl}-4,6-dioxo-4H-thieno [3,4-c]pyrrol-5(6H)-yl)phenyl]-[2,2′-bithiophen]-5-yl}phenyl)-9-(tricosan-12-yl)anthra[2,1,9-def∶6,5,10-d′e′f′]diisoquinoline-1,3,8,10(2H,9H)-tetraone)](FLP7) and poly[2-(4-{4,4′-didodecyl-5′-[4-(1-{4-[5-(2-ethylhexyl)thiophen-2-yl]-8-[5-(heptan-3-yl)thiophen-2-yl]benzo[1,2-b∶4,5-b′]dithiophen-2-yl}-4,6-dioxo-4H-thieno[3,4-c]pyrrol-5(6H)-yl)phenyl]-[2,2′-bithiophen]-5-yl}phenyl)-9-(tricosan-12-yl)anthra[2,1,9-def∶6,5,10-d′e′f′]diisoquinoline-1,3,8,10(2H,9H)-tetraone](FLP8), have been developed with bithiophene-based rigid linkers. These polymers were synthesized by adopting a thiophenedicarboximide(TPD) donor backbone and perylene biimide(PBI) acceptor side units. By adjusting the position of alkyl chains on the rigid linkers from external to interior, the self-aggregation capacity, film morphology and photoelectric conversion efficiency of the polymers were improved. Finally, the FLP7 polymer demonstrated superior photoelectric performance parameters as compared to the FLP8 polymer and achieved a power conversion efficiency of 1.59%.

Key words: Double-cable conjugated polymer, Rigid linker, Self-aggregation, Single-component organic solar cell

CLC Number: 

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