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Ternary Organic Solar Cells with Minimum Voltage Losses

机译：具有最小电压损耗的三元有机太阳能电池

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摘要

A new strategy for designing ternary solar cells is reported in this paper. A low-bandgap polymer named PTB7-Th and a high-bandgap polymer named PBDTTS-FTAZ sharing the same bulk ionization potential and interface positive integer charge transfer energy while featuring complementary absorption spectra are selected. They are used to fabricate efficient ternary solar cells, where the hole can be transported freely between the two donor polymers and collected by the electrode as in one broadband low bandgap polymer. Furthermore, the fullerene acceptor is chosen so that the energy of the positive integer charge transfer state of the two donor polymers is equal to the energy of negative integer charge transfer state of the fullerene, enabling enhanced dissociation of all polymer donor and fullerene acceptor excitons and suppressed bimolecular and trap assistant recombination. The two donor polymers feature good miscibility and energy transfer from high-bandgap polymer of PBDTTS-FTAZ to low-bandgap polymer of PTB7-Th, which contribute to enhanced performance of the ternary solar cell.
机译：本文报道了一种设计三元太阳能电池的新策略。选择了具有相同的本体电离势和界面正整数电荷转移能，同时具有互补吸收光谱的低带隙聚合物PTB7-Th和高带隙聚合物PBDTTS-FTAZ。它们用于制造高效的三元太阳能电池，其中空穴可以像一种宽带低带隙聚合物一样在两种供体聚合物之间自由传输并由电极收集。此外，选择富勒烯受体是为了使两个供体聚合物的正整数电荷转移态的能量等于富勒烯的负整数电荷转移态的能量，从而使所有聚合物供体和富勒烯受体激子和抑制双分子和陷阱助手的重组。两种供体聚合物具有良好的互溶性，并且能从PBDTTS-FTAZ的高带隙聚合物转移到PTB7-Th的低带隙聚合物，从而提高了三元太阳能电池的性能。

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  • 来源
    《Advanced energy materials》 |2017年第21期|1700390.1-1700390.14|共14页
  • 作者

    Wang Chuanfei; Zhang Wei; Meng Xiangyi; Bergqvist Jonas; Liu Xianjie; Genene Zewdneh; Xu Xiaofeng; Yartsev Arkady; Inganaes Olle; Ma Wei; Wang Ergang; Fahlman Mats;

  • 作者单位

    Linkoping Univ, Div Surface Phys & Chem, IFM, SE-58183 Linkoping, Sweden;

    Lund Univ, Div Phys Chem, Box 124, S-22100 Lund, Sweden;

    Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China;

    Linkoping Univ, Biomol & Organ Elect, IFM, SE-58183 Linkoping, Sweden;

    Linkoping Univ, Div Surface Phys & Chem, IFM, SE-58183 Linkoping, Sweden;

    Addis Ababa Univ, Dept Chem, POB 33658, Addis Ababa, Ethiopia|Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden;

    Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden;

    Lund Univ, Div Phys Chem, Box 124, S-22100 Lund, Sweden;

    Linkoping Univ, Biomol & Organ Elect, IFM, SE-58183 Linkoping, Sweden;

    Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China;

    Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden;

    Linkoping Univ, Div Surface Phys & Chem, IFM, SE-58183 Linkoping, Sweden;

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  • 正文语种 eng
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  • 关键词

    binary equivalent; minimum voltage losses; same bulk and interface energy; ternary solar cells;

    机译：二元当量;最小电压损失;相同的体积和界面能;三元太阳能电池;

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