首页|Highly efficient and stable binary and ternary organic solar cells using polymerized nonfused ring electron acceptors

Highly efficient and stable binary and ternary organic solar cells using polymerized nonfused ring electron acceptors

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This study reports the successful design and synthesis of two novel polymerized nonfused ring electron acceptors,P-2BTh and P-2BTh-F,derived from the high-performance nonfused ring electron acceptor,2BTh-2F.Prepared via Stille polymerization,these polymers feature thiophene and fluorinated thiophene asπ-bridge units.Notably,P-2BTh-F,with difluorothiophene as the π-bridge,exhibits a more planar backbone and red-shifted absorption spectrum compared with P-2BTh.When employed in organic solar cells(OSCs)with PBDB-T as the donor material,P-2BTh-F-based devices demonstrate an outstanding power conversion efficiency(PCE)of over 11％,exceeding the 8.7％achieved by P-2BTh-based devices.Furthermore,all-polymer solar cells utilizing PBDB-T:P-2BTh-F exhibit superior storage stability.Additionally,P-2BTh-F was explored as a functional additive in a high-performance binary system,enhancing stability while maintaining comparable PCE(19.45％).This strategy offers a cost-effective approach for fabricating highly efficient and stable binary and ternary organic solar cells,opening new horizons for cost-effective and durable solar cell development.

organic solar cellsall-polymer organic solar cellsternary blend strategynonfused ring electron acceptors

Xiaodong Wang、Nan Wei、Ya-nan Chen、Guangliu Ran、Andong Zhang、Hao Lu、Zhengdong Wei、Yahui Liu、Wenkai Zhang、Zhishan Bo

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College of Textiles &Clothing,State Key Laboratory of Bio-fibers and Eco-textiles,Qingdao University,Qingdao 266071,China

Beijing Key Laboratory of Energy Conversion and Storage Materials,College of Chemistry,Beijing Normal University,Beijing 100875,China

School of Physics and Astronomy,Applied Optics Beijing Area Major Laboratory,Center for Advanced Quantum Studies,Beijing Normal University,Beijing 100875,China

College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

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Shandong Postdoctoral Science FoundationNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong ProvinceTaishan Scholars ProgramTaishan Scholars ProgramState Key Laboratory of Bio-Fibers and Eco-Textiles(Qingdao University)

SDBX2023026521731745193300122109080ZR2022YQ45ZR2023QB013tstp20221121tsqnz20221134RZ2200002821

2024

10.1093/nsr/nwae258

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ISSN：
年,卷(期)：2024.11(9)