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首页> 外文期刊>Advanced Functional Materials >Naphthacenodithiophene Based Polymers-New Members of the Acenodithiophene Family Exhibiting High Mobility and Power Conversion Efficiency
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Naphthacenodithiophene Based Polymers-New Members of the Acenodithiophene Family Exhibiting High Mobility and Power Conversion Efficiency

机译：基于萘二噻吩的聚合物-展现高迁移率和功率转换效率的乙酰二噻吩家族的新成员

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摘要

Wide-bandgap conjugated polymers with a linear naphthacenodithiophene (NDT) donor unit are herein reported along with their performance in both transistor and solar cell devices. The monomer is synthesized starting from 2,6-dihydroxynaphthalene with a double Fries rearrangement as the key step. By copolymerization with 2,1,3-benzothiadiazole (BT) via a palladium-catalyzed Suzuki coupling reaction, NDT-BT co-polymers with high molecular weights and narrow polydispersities are afforded. These novel wide-bandgap polymers are evaluated as the semiconducting polymer in both organic field effect transistor and organic photovoltaic applications. The synthesized polymers reveal an optical bandgap in the range of 1.8 eV with an electron affinity of 3.6 eV which provides sufficient energy offset for electron transfer to PC70BM acceptors. In organic field effect transistors, the synthesized polymers demonstrate high hole mobilities of around 0.4 cm(2) V-1 s(-1). By using a blend of NDT-BT with PC70BM as absorber layer in organic bulk heterojunction solar cells, power conversion efficiencies of 7.5% are obtained. This value is among the highest obtained for polymers with a wider bandgap (larger than 1.7 eV), making this polymer also interesting for application in tandem or multijunction solar cells.
机译：本文报道了具有线性萘二噻吩（NDT）供体单元的宽带隙共轭聚合物及其在晶体管和太阳能电池设备中的性能。该单体从2,6-二羟基萘开始合成，关键步骤是双弗里斯重排。通过钯催化的Suzuki偶联反应与2,1,3-苯并噻二唑（BT）共聚，得到具有高分子量和窄多分散性的NDT-BT共聚物。这些新型的宽带隙聚合物在有机场效应晶体管和有机光伏应用中均被评估为半导体聚合物。合成的聚合物显示出1.8 eV的光学带隙，电子亲和力为3.6 eV，为电子转移到PC70BM受体提供了足够的能量偏移。在有机场效应晶体管中，合成的聚合物表现出约0.4 cm（2）V-1 s（-1）的高空穴迁移率。通过将NDT-BT与PC70BM的混合物用作有机体异质结太阳能电池中的吸收层，可获得7.5％的功率转换效率。对于具有较宽的带隙（大于1.7 eV）的聚合物，该值是最高的，这使得该聚合物也可用于串联或多结太阳能电池。

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  • 来源
    《Advanced Functional Materials》 |2016年第38期|6961-6969|共9页
  • 作者

    Knall Astrid-Caroline; Ashraf Raja Shahid; Nikolka Mark; Nielsen Christian B.; Purushothaman Balaji; Sadhanala Aditya; Hurhangee Michael; Broch Katharina; Harkin David J.; Novak Jiri; Neophytou Marios; Hayoz Pascal; Sirringhaus Henning; McCulloch Iain;

  • 作者单位

    Imperial Coll London, Dept Chem, London SW7 2AZ, England|Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England|Graz Univ Technol, NAWI Graz, Inst Chem & Technol Mat, Stremayrgasse 9, A-8010 Graz, Austria;

    Imperial Coll London, Dept Chem, London SW7 2AZ, England|Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England;

    Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England;

    Imperial Coll London, Dept Chem, London SW7 2AZ, England|Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England|Queen Mary Univ London, Mat Res Inst, Mile End Rd, London E1 4NS, England|Queen Mary Univ London, Sch Biol & Chem Sci, Mile End Rd, London E1 4NS, England;

    Imperial Coll London, Dept Chem, London SW7 2AZ, England|Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England;

    Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England;

    Imperial Coll London, Dept Chem, London SW7 2AZ, England|Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England;

    Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England;

    Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England;

    Masaryk Univ, CEITEC MU, Kotlarska 2, CS-61137 Brno, Czech Republic|Masaryk Univ, Dept Condensed Matter Phys, Kotlarska 2, CS-61137 Brno, Czech Republic;

    King Abdullah Univ Sci & Technol, SPERC, Thuwal 239556900, Saudi Arabia;

    BASF Schweiz AG, GMV BE, R-1059-5-09 Mattenstr, CH-4058 Basel, Switzerland;

    Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England;

    Imperial Coll London, Dept Chem, London SW7 2AZ, England|Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England|King Abdullah Univ Sci & Technol, SPERC, Thuwal 239556900, Saudi Arabia;

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