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首页> 外文期刊>Advanced energy materials >High-Performance and Uniform 1 cm(2) Polymer Solar Cells with D-1-A-D-2-A-Type Random Terpolymers
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High-Performance and Uniform 1 cm(2) Polymer Solar Cells with D-1-A-D-2-A-Type Random Terpolymers

机译：具有D-1-A-D-2-A型无规三元共聚物的高性能且均匀的1 cm（2）聚合物太阳能电池

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摘要

For the commercial development of organic photovoltaics (OPVs), laboratory-scale OPV technology must be translated to large area modules. In particular, it is important to develop high-efficiency polymers that can form thick (>100 nm) bulk heterojunction (BHJ) films over large areas with optimal morphologies for charge generation and transport. Here, D-1-A-D-2-A random terpolymers composed of 2,2'-bithiophene with various proportions of 5,6-difluoro-4,7-bis(thiophen-2-yl)-2,1,3-benzothiadiazole and 5,6-difluoro-2,1,3-benzothiadiazole (FBT) are synthesized. It is found that incorporating small proportions of FBT into the polymer not only conserves the high crystallinity and favorable face-on orientation of the D-A copolymer FBT-Th4 but also improves the nanoscale phase separation of the BHJ film. Consequently, the random terpolymer PDT2fBT-BT10 exhibits a much improved solar cell efficiency of 10.31% when compared to that of the copolymer FBT-Th4 (8.62%). Moreover, due to this polymer's excellent processability and suppressed overaggregation, OPVs with 1 cm(2) active area based on 351 nm thick PDT2fBT-BT10 BHJs exhibit high photovoltaic performance of 9.42%, whereas rapid efficiency decreases arise for FBT-Th4-based OPVs for film thicknesses above 300 nm. It is demonstrated that this random terpolymer can be used in large area and thick BHJ OPVs, and guidelines for developing polymers that are suitable for large-scale printing technologies are presented.
机译：对于有机光伏（OPV）的商业开发，必须将实验室规模的OPV技术转换为大面积模块。尤其重要的是，开发高效的聚合物，该聚合物可以在大面积上形成厚（> 100 nm）的本体异质结（BHJ）薄膜，并具有最佳的电荷生成和传输形态。在此，D-1-AD-2-A由2,2'-联噻吩与各种比例的5,6-二氟-4,7-双（噻吩-2-基）-2,1,3-组成的无规三元共聚物合成了苯并噻二唑和5,6-二氟-2,1,3-苯并噻二唑（FBT）。发现将少量的FBT掺入聚合物中不仅保留了D-A共聚物FBT-Th4的高结晶度和有利的面对取向，而且还改善了BHJ膜的纳米级相分离。因此，与共聚物FBT-Th4（8.62％）相比，无规三元共聚物PDT2fBT-BT10的太阳能电池效率提高了10.31％。此外，由于这种聚合物的优异加工性能和抑制的过度聚集，基于351 nm厚的PDT2fBT-BT10 BHJ具有1 cm（2）活性区域的OPV表现出9.42％的高光伏性能，而基于FBT-Th4的OPV的效率却迅速下降。对于300 nm以上的膜厚度。证明了这种无规三元共聚物可用于大面积和厚BHJ OPV，并提出了开发适用于大规模印刷技术的聚合物的指南。

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  • 来源
    《Advanced energy materials》 |2018年第7期|1701405.1-1701405.13|共13页
  • 作者

    Shin Injeong; Ahn Hyungju; Yun Jae Hoon; Jo Jea Woong; Park Sungmin; Joe Sung-yoon; Bang Joona; Son Hae Jung;

  • 作者单位

    Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea|Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea;

    Pohang Accelerator Lab, Pohang 37673, South Korea;

    Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea|UST, Div Energy & Environm, KIST Sch, Daejeon 34113, South Korea;

    Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea;

    Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea;

    Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea;

    Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea;

    Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea|UST, Div Energy & Environm, KIST Sch, Daejeon 34113, South Korea;

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  • 正文语种 eng
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  • 关键词

    active area; copolymers; morphology; organic photovoltaics; power conversion efficiency;

    机译：活性面积;共聚物;形态;有机光伏;功率转换效率;

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