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首页> 外文期刊>Advanced Functional Materials >Hydrogen Bond Induced Green Solvent Processed High Performance Ternary Organic Solar Cells with Good Tolerance on Film Thickness and Blend Ratios
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Hydrogen Bond Induced Green Solvent Processed High Performance Ternary Organic Solar Cells with Good Tolerance on Film Thickness and Blend Ratios

机译：氢键诱导的绿色溶剂处理高性能三元有机太阳能电池，对膜厚和混合比具有良好的耐受性

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摘要

For comprehensive development of organic solar cells (OSCs), some factors such as environmental stability, low cost, insensitive film thickness, component contents tolerance, and green preparation processes are equally crucial to achieve high power conversion efficiencies (PCEs). In this work, a small molecule 3-(diethylamino)-7-imino-7H-benzo[4,51imidazo[1,2-a]-chromeno[3,2-c]pyridine-6-carbonitrile (DIBC), which is commercially available at low cost, is utilized to realize high-performance ternary OSCs. Demonstrated via Fourier transform infrared and 2D-1HN MR, DIBC can form hydrogen bond interactions with [6,61-phenyl-C-71-butyric acid methyl ester (PC71BM) in solid films. Further electrostatic potential (ESP) calculations indicate that the hydrogen bond interaction enhances the ESP of PC71BM and accelerates charge transport between donor and acceptor. As a result, poly(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-bO]dithiophene-2,6-diylalt-(4-(2-ethylhexyl)-3-fluorothienop,4-bithiophene-)-2-carboxylate-2-6-diyl (PTB7-Th):DIBC:PC71BM-based ternary OSC achieves a maximum efficiency of 12.17%, which is the best result of green solvent processed fullerene OSCs at present. It is noteworthy that the ternary OSCs also show great tolerance to film thickness and blend ratios. These unique properties are attributed to the hydrogen-bond-linked DIBC and PC71BM, which modulates molecule distribution and improves film morphology with an interpenetrating network structure. Furthermore, the DIBC containing device also exhibits good thermal and light radiation stability. These results illustrate that intermolecular hydrogen bond interaction has great potential for realizing high-performance OSCs.
机译：对于有机太阳能电池（OSC）的全面开发，诸如环境稳定性，低成本，不敏感的薄膜厚度，组分含量耐受性和绿色制备工艺等因素对于实现高功率转换效率（PCE）同样至关重要。在这项工作中，一个小分子3-（二乙氨基）-7-亚氨基-7H-苯并[4,51咪唑并[1,2-a]-铬[3,2-c]吡啶-6-腈（DIBC），可以廉价购得，可用于实现高性能三元OSC。通过傅立叶变换红外和2D-1HN MR证明，DIBC可以与固体膜中的[6,61-苯基-C-71-丁酸甲酯（PC71BM）形成氢键相互作用。进一步的静电势（ESP）计算表明，氢键相互作用增强了PC71BM的ESP，并加速了供体和受体之间的电荷传输。结果，聚（4,8-双（5-（2-（乙基乙基己基）噻吩-2-基）苯并[1,2-b; 4,5-bO]二噻吩-2,6-二ylalt-（4- （2-乙基己基）-3-氟噻吩，4-联噻吩-）-2-羧酸酯-2-6-二基（PTB7-Th）：DIBC：PC71BM的三元OSC的最大效率达到12.17％，这是最好的是目前绿色溶剂处理过的富勒烯OSC的结果，值得注意的是，三元OSC对膜厚和共混比也表现出很大的耐受性，这些独特的特性归因于氢键连接的DIBC和PC71BM，它们可调节分子分布并改善膜形貌具有互穿网络结构，此外，含DIBC的器件还具有良好的热稳定性和光稳定性，这些结果说明分子间氢键相互作用具有实现高性能OSC的巨大潜力。

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  • 来源
    《Advanced Functional Materials》 |2019年第30期|1902078.1-1902078.12|共12页
  • 作者

    Du Xiaoyang; Lu Xi; Zhao Juewen; Zhang Yuqing; Li Xinrui; Lin Hui; Zheng Cajun; Tao Sliu;

  • 作者单位

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

    UESTC, Sch Optoelect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    electrostatic potential; green solvents; hydrogen bonds; organic solar cells; stability;

    机译：静电潜力;绿色溶剂;氢键;有机太阳能电池;稳定性;

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