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首页> 外文期刊>Advanced energy materials >Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells
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Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells

机译：同时用于高性能富勒烯和非富勒烯太阳能电池的可行D1-A-D2-A无规共聚物

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摘要

A series of PBDB-TTn random donor copolymers is synthesized, consisting of an electron-deficient benzo[1,2-c:4,5-c]dithiophene-4,8-dione (BDD) unit and different ratios of two electron-rich benzo[1,2-b:4,5-b]dithiophene (BDT) and thieno[3,2-b]thiophene (TT) units, with intention to modulate the intrachain and/or interchain interactions and ultimately bulk-heterojunction morphology evolution. A comparative study using 4 x 2 polymer solar cell (PSC) performance maps and each of the [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) and the fused-aromatic-ring-based molecule (m-ITIC) acceptors are carried out. Given the similarities in their absorption ranges and energy levels, the PBDB-TTn copolymers clearly reveal a change in the absorption coefficients upon optimization of the BDT to TT ratio in the backbone. Among the given acceptor combination sets, superior performances are observed in the case of PBDB-TT5 blended with PC71BM (8.34 +/- 0.10%) or m-ITIC (11.10 +/- 0.08%), and the dominant factors causing power conversion efficiency differences in them are found to be distinctly different. For example, the performances of PC71BM-based PSCs are governed by size and population of face-on crystallites, while intermixed morphology without the formation of large phase-separated aggregates is the key factor for achieving high-performance m-ITIC-based PSCs. This study presents a new sketch of structure-morphology-performance relationships for fullerene- versus nonfullerene-based PSCs.
机译：合成了一系列PBDB-TTn无规给体共聚物，该共聚物由缺电子的苯并[1,2-c：4,5-c]二噻吩-4,8-​​二酮（BDD）单元和不同比例的两个电子-丰富的苯并[1,2-b：4,5-b]二噻吩（BDT）和噻吩并[3,2-b]噻吩（TT）单元，旨在调节链内和/或链间相互作用，最终调节整体异质结形态演变。使用4 x 2聚合物太阳能电池（PSC）性能图以及[6,6]-苯基-C-71-丁酸甲酯（PC71BM）和基于稠合芳环的分子（m -ITIC）受体被执行。鉴于它们的吸收范围和能级相似，PBDB-TTn共聚物在优化主链中BDT与TT的比例后，清楚地揭示了吸收系数的变化。在给定的受体组合物中，PBDB-TT5与PC71BM（8.34 +/- 0.10％）或m-ITIC（11.10 +/- 0.08％）混合的情况下观察到了优异的性能，并且是导致功率转换效率的主要因素发现它们之间的差异明显不同。例如，基于PC71BM的PSC的性能受表面微晶的大小和数量控制，而没有形成大的相分离聚集体的混合形态是获得高性能基于m-ITIC的PSC的关键因素。这项研究提出了基于富勒烯和非富勒烯的PSC的结构-形态-性能关系的新草图。

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  • 来源
    《Advanced energy materials》 |2018年第7期|1702166.1-1702166.13|共13页
  • 作者

    Jeong Mingyu; Chen Shanshan; Lee Sang Myeon; Wang Zhiwei; Yang Yankang; Zhang Zhi-Guo; Zhang Chunfeng; Xiao Min; Li Yongfang; Yang Changduk;

  • 作者单位

    UNIST, Dept Energy Engn, Sch Energy & Chem Engn, Perovtron Res Ctr,Low Dimens Carbon Mat Ctr, 50 UNIST Gil, Ulsan 44919, South Korea;

    UNIST, Dept Energy Engn, Sch Energy & Chem Engn, Perovtron Res Ctr,Low Dimens Carbon Mat Ctr, 50 UNIST Gil, Ulsan 44919, South Korea;

    UNIST, Dept Energy Engn, Sch Energy & Chem Engn, Perovtron Res Ctr,Low Dimens Carbon Mat Ctr, 50 UNIST Gil, Ulsan 44919, South Korea;

    Nanjing Univ, Natl Lab Solid State Microstruct, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China|Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China;

    Nanjing Univ, Natl Lab Solid State Microstruct, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China|Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Natl Lab Solid State Microstruct, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China|Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China;

    UNIST, Dept Energy Engn, Sch Energy & Chem Engn, Perovtron Res Ctr,Low Dimens Carbon Mat Ctr, 50 UNIST Gil, Ulsan 44919, South Korea;

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  • 正文语种 eng
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  • 关键词

    compatibility; fullerene solar cells; nonfullerene solar cells; random copolymer; structure-property relationship;

    机译：相容性;富勒烯太阳能电池;非富勒烯太阳能电池;无规共聚物;结构-性质关系;

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