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Tuning of the Photovoltaic Parameters of Molecular Donors by Covalent Bridging

机译：通过共价桥接调节分子给体的光伏参数

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摘要

The synthesis of donor-acceptor molecules involving triarylamines and dicy-anovinyl blocks is described. Optical and electrochemical results show that rigidification of the acceptor part of the molecule by a covalent bridge leads to a ca. 0.20 eV increase of the band gap due to a parallel increase of the lowest unoccupied molecular orbital level. A preliminary evaluation of these compounds as donor materials in organic solar cells shows that although this structural modification reduces the light-harvesting properties of the donor molecule, it nevertheless induces an increase of the efficiency of the resulting solar cells due to a simultaneous improvement of the open-circuit voltage and fill factor.
机译：描述了涉及三芳基胺和二氰基-乙烯基嵌段的供体-受体分子的合成。光学和电化学结果表明，通过共价桥对分子的受体部分进行的刚性化导致ca。由于最低未占据分子轨道水平的平行增加，带隙增加了0.20 eV。对这些化合物作为有机太阳能电池中的施主材料的初步评估表明，尽管这种结构修饰降低了施主分子的集光性能，但由于同时提高了太阳能电池的效率，它还是导致了所得太阳能电池效率的提高。开路电压和填充系数。

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  • 来源
    《Advanced Functional Materials》 |2013年第38期|4854-4861|共8页
  • 作者

    Dora Demeter; Victorien Jeux; Philippe Leriche; Philippe Blanchard; Yoann Olivier; Jerome Cornil; Riccardo Po; Jean Roncali;

  • 作者单位

    Croup Linear Conjugated Systems CNRS UMR 6200, MOLTECH-Anjou University of Angers 2 Bd Lavoisier 49045 Angers, France;

    Croup Linear Conjugated Systems CNRS UMR 6200, MOLTECH-Anjou University of Angers 2 Bd Lavoisier 49045 Angers, France;

    Croup Linear Conjugated Systems CNRS UMR 6200, MOLTECH-Anjou University of Angers 2 Bd Lavoisier 49045 Angers, France;

    Croup Linear Conjugated Systems CNRS UMR 6200, MOLTECH-Anjou University of Angers 2 Bd Lavoisier 49045 Angers, France;

    Laboratory for Chemistry of Novel Materials University of Mons Place du Parc, 7000, Mons, Belgium;

    Laboratory for Chemistry of Novel Materials University of Mons Place du Parc, 7000, Mons, Belgium;

    Centro ricerche per le energie non convenzionali Istituto ENI Donegani ENI S.p.A., via G. Fauser 4, 28100 Novara, Italy;

    Croup Linear Conjugated Systems CNRS UMR 6200, MOLTECH-Anjou University of Angers 2 Bd Lavoisier 49045 Angers, France;

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