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首页> 外文期刊>Organic Electronics >High-performance polymer solar cells based on terpolymer composed of one donor and two acceptors processed with non-halogenated solvent
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High-performance polymer solar cells based on terpolymer composed of one donor and two acceptors processed with non-halogenated solvent

机译：基于萜种聚合物的高性能聚合物太阳能电池组成，由一种供体和两个受体用非卤化溶剂加工的受体组成

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摘要

Terpolymers consisting of three monomers with one electron donor unit and two electron acceptor units are promising p-type polymers for polymer solar cells (PSCs) because the incorporation of a third monomer into a copolymer backbone provides synergetic effect on physical properties such as absorption ability, charge transport, and photovoltaic performance. Currently, novel p-type terpolymers need to be developed for high-efficiency PSCs, which can be processed with eco-friendly non-halogenated solvents. In this study, a new series of terpolymers composed of 4,8-di(2,3-didecylthiophen-5-yl)-benzo[l,2-b:4,5-b']dithiophene (BDT), 4,7-di(thien-2-yl)-5,6-difluoro-2,l,3-benzothiadiazole (DTffBT), and benzo[l,2-c:4,5-c']dithiophene-4,8-dione (BDD) segments was synthesized and characterized for high-performance PSCs processed with non-halogenated solvents. PBDTBD terpolymers (i.e., PBDTBD-25, PBDTBD-50, and PBDTBD-75) were synthesized by adjusting different ratios of DTffBT to BDD segment (25%, 50%, and 75% of DTffBT). PBDTBD terpolymers exhibited excellent solubility in non-halogenated solvents. The optical, electrochemical, and morphological properties of PBDTBD terpolymers were successfully controlled by modulating the molar ratio of DTffBT and BDD. Moreover, a PBDTBD-50:IT-4F blended film showed homogeneous film with a favorable face-on orientation. The PBDTBD-50: IT-4F blended film showed excellent hole and electron mobility, which resulted in a superior carrier balance. PBDTBD-50-based PSCs, processed with o-xylene, achieved the highest PCE of 10.03%, which is four times higher than those of copolymer-based PSCs. The novel terpolymers composed of one electron donor unit and two electron acceptor units are expected to make a considerable contribution to the development of high-performance PSCs.
机译：由三种具有一个电子供体单元和两个电子受体单元组成的三元共聚物是高分子太阳能电池（PSC）的p型聚合物，因为将第三单体掺入共聚物骨架中为诸如吸收能力的物理性质提供协同作用，电荷运输，光伏性能。目前，需要开发新的p型三元共聚物以用于高效PSC，其可以用生态友好的非卤化溶剂加工。在本研究中，由4,8-Di（2,3-甲基噻吩-5-基）组成的新系列三元共聚物-benzo [L，2-B：4,5-B']二噻吩（BDT），4， 7-DI（Thien-2-Y1）-5,6-二氟-2，L，3-苯并噻唑（DtffBt）和苯并[L，2-C：4,5-C']二噻吩-4,8-合成二酮（BDD）区段，并表征用非卤化溶剂加工的高性能PSC。通过调节不同的DtffBt对BDD段的不同比例（25％，50％和75％的DtffBT）来合成PBDTBD三元共聚物（即PBDTBD-25，PBDTBD-50和PBDTBD-75）。 PBDTBD三元共聚物在非卤化溶剂中表现出优异的溶解度。通过调节DtffBT和BDD的摩尔比成功控制PBDTBD三元共聚物的光学，电化学和形态学性质。此外，PBDTBD-50：IT-4F混合膜显示出均匀薄膜，具有良好的面对定向。 PBDTBD-50：IT-4F混纺膜显示出优异的孔和电子迁移率，导致优异的载体平衡。用O-二甲苯加工的PBDTBD-50基本PSC达到了10.03％的最高PCE，比基于共聚物的PSC高4倍。预期由一个电子供体单元和两个电子受体单元组成的新型三元共聚物对高性能PSC的发展产生了相当大的贡献。

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  • 来源
    《Organic Electronics》 |2020年第11期|105929.1-105929.9|共9页
  • 作者

    Hyeonwoo Jung; Gyeonghwa Yu; Seokhoon Jang; Inkook Hwang; Bomi Kim; BongSoo Kim; Youngu Lee;

  • 作者单位

    Department of Energy Science and Engineering DGIST 333 Techno Jungang-daero Hyeonpung-eup Dalseong-gun Daegu 42988 Republic of Korea;

    Department of Energy Science and Engineering DGIST 333 Techno Jungang-daero Hyeonpung-eup Dalseong-gun Daegu 42988 Republic of Korea;

    Department of Energy Science and Engineering DGIST 333 Techno Jungang-daero Hyeonpung-eup Dalseong-gun Daegu 42988 Republic of Korea;

    Department of Energy Science and Engineering DGIST 333 Techno Jungang-daero Hyeonpung-eup Dalseong-gun Daegu 42988 Republic of Korea;

    Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea;

    Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea;

    Department of Energy Science and Engineering DGIST 333 Techno Jungang-daero Hyeonpung-eup Dalseong-gun Daegu 42988 Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Polymer solar cells; Terpolymer; Non-halogenated solvent; Non-fullerene acceptor;

    机译：聚合物太阳能电池;萜酯;非卤代溶剂;非富富勒因受体;

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