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9-Alkylidene-9H-Fluorene-Containing Polymer for High-Efficiency Polymer Solar Cells
Chinese Academy of Science.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Chinese Academy of Science.
Chinese Academy of Science.
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2011 (English)In: Macromolecules, ISSN 0024-9297, E-ISSN 1520-5835, Vol. 44, no 19, 7617-7624 p.Article in journal (Refereed) Published
Abstract [en]

A novel donor-acceptor copolymer containing 9-alkylidene-9H-fluorene unit in the main chain, poly[9-(1-hexylheptylidene)-2,7-fluorene-alt-5, 5-(4,7-di-2-thienyl-5,6-dialkoxy-2,1,3-benzothiadiazole)] (PAFDTBT), has been synthesized and evaluated in bulk heterojunction polymer solar cells (BHJ PSCs). The polymer possesses a low band gap of 1.84 eV, a low-lying HOMO energy level (5.32 eV), and excellent solubility in common organic solvents. PSCs based on PAFDTBT and (6,6)-phenyl-C(71)-butyric add methyl ester (PC(71)BM) demonstrate a power conversion efficiency (PCE) of 6.2% with a high fill factor (FF) of 0.70, which indicates that 9-alkylidene-9H-fluorene can be a very useful building block for constructing narrow band gap conjugated polymers for high-efficiency BHJ PSCs.

Place, publisher, year, edition, pages
American Chemical Society , 2011. Vol. 44, no 19, 7617-7624 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-71637DOI: 10.1021/ma201477bISI: 000295487600015OAI: diva2:451831

Funding Agencies|NSF of China|2083400650821062|973 Program|2011CB9357032009CB-623603|IC, CAS from Swedish Research Council (VR)||

Available from: 2011-10-27 Created: 2011-10-27 Last updated: 2015-06-01

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Li, CuihongMa, ZaifeiZhang, Fengling
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Department of Physics, Chemistry and BiologyThe Institute of TechnologyBiomolecular and Organic ElectronicsFaculty of Science & Engineering
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