发光学报2026，Vol.47Issue(6)：1018-1028,11.DOI:10.37188/CJL.20260037
基于氟化侧链的二(噻吩并环戊二烯)并咔唑非富勒烯受体材料合成及光伏性能
Enhancing Photovoltaic Performance of Dithienocyclopentacarbazole-based Non-fullerene Acceptor by Incorporating Fluorinated Side-chain
摘要
Abstract
Side-chain fluorination of non-fullerene acceptors(NFAs)has rarely been reported to enhance the per-formance of organic solar cells,despite its critical role in boosting the carrier mobility property.Three acceptor-do-nor-acceptor(A-D-A)type acceptors(HP1,HP2,and HP3)based on dithienocyclopentacarbazole are successfully designed and synthesized.The effects of fluorinations in side-chains and ending groups on the final photovoltaic per-formance are investigated in detail.Compared to HP2 with fluorinated side-chains,HP1 with fluorinated ending groups shows red-shifted absorption and down-shifted energy levels.For HP3 with fluorination in both side-chains and ending groups,the lowest unoccupied molecular orbital(LUMO)energy level is up-shifted to-3.88 eV in spite of its slightly enlarged optical bandgap in comparison with that of HP1.The PM6∶HP3 blend presents better morphol-ogy and carrier transport property than HP1-and HP2-based counterparts,and thereby leading to an increased power conversion efficiency(PCE)of 11.48％with an open-circuit voltage(Voc)of 0.97 V for the corresponding device.However,the HP1-based device delivers a decreased PCE of 11.08％with a reduced Voc of 0.93 V.And,the PCE based on PM6∶HP2 blend is only 4.20％.It should be noted that the organic solar cells based on PM6∶HP1∶HP3(1∶0.5∶0.5,w/w/w)affords an enhanced PCE of 11.95％.The findings indicate that rational fluorinated side-chain engineering can significantly enhance the photovoltaic performance of NFAs.关键词
非富勒烯受体/有机太阳能电池/二(噻吩并环戊二烯)并咔唑/氟化侧链/能量转换效率Key words
non-fullerene acceptor/organic solar cell/dithienocyclopentacarbazole/fluorinated side-chain/power conversion efficiency分类
信息技术与安全科学引用本文复制引用
涂启胜,林秋香,王建彬,唐孝生..基于氟化侧链的二(噻吩并环戊二烯)并咔唑非富勒烯受体材料合成及光伏性能[J].发光学报,2026,47(6):1018-1028,11.基金项目
福建省自然科学基金(2023J011126) （2023J011126）
福建省发树慈善基金会资助研究专项(MFK23005) （MFK23005）
福州市科技人才培育计划项目(2024-R-001)Supported by Natural Science Foundation of Fujian Province(2023J011126) （2024-R-001）
Research Project of Fashu Foundation(MFK23005) （MFK23005）
Fuzhou Science and Technology Plan Project(2024-R-001) （2024-R-001）
