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首页> 外文期刊>RSC Advances >Effect of different donor groups in bis(6-methoxylpyridin-2-yl) substituted co-sensitizer on the performance of N719 sensitized solar cells
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Effect of different donor groups in bis(6-methoxylpyridin-2-yl) substituted co-sensitizer on the performance of N719 sensitized solar cells

机译：不同供体基团在双（6-甲氧基吡啶-2-基）取代的共敏化子对N719敏化太阳能电池性能的影响

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摘要

Three bis(6-methoxylpyridin-2-yl) substituted pyridine-anchor co-sensitizers with different donor groups are synthesized by 1,2-diaminobenzene (named L4), 1,2-diaminocyclohexane (named L5) and 1,4-butanediamine (named L6) with the aim to obtain rigid, semi-rigid and flexible co-sensitizer molecules, respectively. Their adaptability in N719 sensitized solar cells as co-sensitizers and the effects of their molecular rigidity, conjugation and co-planarity on the performance of DSSCs are studied. The results show that these three co-sensitizers are suitable to use in N719 sensitized solar cells. However, due to the different donor groups in the molecular structure, the co-sensitization performance of the rigid co-sensitizer with a large conjugate system is better than that of semi-rigid and flexible co-sensitizers. A short circuit current density of 13.27 mA cm(-2), an open circuit voltage of 0.73 V and a fill factor of 0.63 corresponding to an overall conversion efficiency of 6.16% under AM 1.5G solar irradiation were achieved when rigid L4 was used as the co-sensitizer, which is 30% higher than that for DSSCs only sensitized by N719 (5.37%) under the same conditions. Mechanistic investigations are carried out by various spectral and electrochemical characterizations.
机译：具有不同供体基团的三种双（6-甲氧基吡啶-2-基）取代的吡啶 - 锚辅助剂由1,2-二氨基苯（命名为L4），1,2-二氨基环己烷（命名为L5）和1,4-丁二胺合成（命名为L6），目的是分别获得刚性，半刚性和柔性的共敏化剂分子。研究了N719敏化太阳能电池作为共敏化体的适应性以及它们的分子刚性，缀合和平面性对DSSC的性能的影响。结果表明，这三个共敏化体适用于N719敏化太阳能电池。然而，由于分子结构中的其他供体基团，具有大共轭系统的刚性共敏化剂的共敏化性能优于半刚性和柔性共敏化体。短路电流密度为13.27 mA cm（-2），当使用刚性L4时，实现了0.73V的开路电压为0.73V，填充因子0.63，对应于AM 1.5G的整体转化效率为6.16％的总转化效率。共敏化剂，比在相同条件下由N719（5.37％）致敏的DSSC的30％高30％。通过各种光谱和电化学表征进行机械研究。

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  • 来源
    《RSC Advances》 |2015年第117期|共11页
  • 作者

    Wei Liguo; Yang Yulin; Zhu Zhaoyang; Fan Ruiqing; Wang Ping; Dong Yuwei; Chen Shuo;

  • 作者单位

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

    Harbin Inst Technol Dept Chem Harbin 150001 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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