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Updated: Apr 10, 2026
08:29
Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
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Regular Copolymer Acceptor with Enhanced Molecular Stacking Enables 20.03% Efficiency in Binary All-Polymer Solar
Cen Zhang1,2, Haisheng Ma1,2, Tianchen Lu3,4
1Hangzhou International Innovation Institute, Beihang University, Hangzhou, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|April 9, 2026
Summary
Ternary regular copolymerization precisely controls polymer microstructure, enhancing crystallization and molecular stacking. This strategy leads to improved polymer acceptor performance in organic solar cells, achieving 20.03% efficiency.
Area of Science:
- Materials Science
- Polymer Chemistry
- Organic Electronics
Background:
- Ternary random copolymerization offers control over polymer properties but suffers from sequence inhomogeneity.
- This inhomogeneity disrupts molecular arrangement, aggregation, and morphology in polymer acceptors.
- Achieving optimal morphology is crucial for high-performance organic electronic devices.
Purpose of the Study:
- To introduce and investigate ternary regular copolymerization for precise control over polymer microstructure.
- To enhance molecular arrangement, crystallization, and stacking in polymer acceptors.
- To improve the photovoltaic performance of organic solar cells.
Main Methods:
- Synthesis of regular copolymers (RC10) and random copolymers (UC10) using benzothiadiazole and benzoquinoxaline monomers.
- Characterization of copolymer microstructure and molecular conformation.
- Fabrication and testing of binary organic solar cell devices.
Main Results:
- Regular copolymers exhibit controlled microstructure and enhanced molecular stacking compared to random copolymers.
- A binary device using PM6:RC10 achieved a power conversion efficiency of 20.03%.
- Other synthesized regular copolymers also demonstrated superior photovoltaic performance over their random counterparts.
Conclusions:
- Ternary regular copolymerization precisely controls microstructure and enhances crystallization.
- This approach effectively regulates molecular aggregation and alignment in polymer acceptors.
- Regular copolymerization is a promising strategy for designing high-performance polymer acceptor materials for organic solar cells.
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