• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Similar or Totally Different: the Adjustment of the Twist Conformation Through Minor Structural Modification, and Dramatically Improved Performance for Dye-Sensitized Solar Cell
【24h】

Similar or Totally Different: the Adjustment of the Twist Conformation Through Minor Structural Modification, and Dramatically Improved Performance for Dye-Sensitized Solar Cell

机译：相似或完全不同：通过较小的结构修改来调整扭曲构型，并显着提高染料敏化太阳能电池的性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A novel approach for enhancing the performance of dye-sensitized solar cells is presented. It is based on the analysis of five sensitizers by utilizing triarylamine as donor, thiophene benzothiadiazole as chromophore and substituted thienyl linked with cyanoacrylic acid as the anchoring group (LI-80-LI-84). Accompanied with the increasing steric hindrance of the substituents on the thienyl isolation group, the conformation of the dyes, in particular the angle between the chromophore and the anchoring group, becomes more and more twisted. Surprisingly, sensitizers with poorer conjugation effects (the higher twisted conformation) achieve better photovoltaic performances, showing a contrary trend to the traditional donor-(π-spacer)-acceptor dyes with a better co-planarity. On the basis of the preceding fundamental comprehensions, an empirical method is successfully applied to a new phenyl-based system (LI-85 and LI-86) to improve their performances. The systematical investigation indicates that the twisted structures can contribute to the ECB of the TiO2 film, electron lifetime and resistance at the TiO2/dye/electrolyte interface. Thereby, the efficiency of the initial LI-80-based cell has been dramatically improved to 2.45 times higher for LI-86-based cell, paving a new way for the design of better sensitizers with higher device performances.
机译：提出了一种新颖的方法来增强染料敏化太阳能电池的性能。它是基于对五种敏化剂的分析，其中以三芳基胺为供体，噻吩苯并噻二唑为生色团，并与氰基丙烯酸连接的取代噻吩基作为锚定基团（LI-80-LI-84）。伴随噻吩基分离基团上取代基的空间位阻的增加，染料的构型，特别是生色团与锚定基团之间的角度，变得越来越扭曲。出乎意料的是，具有较差的共轭作用（较高的扭曲构象）的敏化剂实现了更好的光伏性能，显示出与具有更好共面性的传统供体-（π-间隔子）-受体染料相反的趋势。在上述基本理解的基础上，将经验方法成功应用于新的基于苯基的系统（LI-85和LI-86）以提高其性能。系统研究表明，扭曲的结构可以促进TiO2薄膜的ECB，电子寿命和TiO2 /染料/电解质界面的电阻。因此，最初的基于LI-80的电池的效率已显着提高到基于LI-86的电池的2.45倍，这为设计具有更高设备性能的更好的敏化剂铺平了新途径。

著录项

  • 来源
    《Advanced energy materials》 |2015年第18期|1-10|共10页
  • 作者

    Zhaofei Chai; Mei Wu; Manman Fang; Sushu Wan; Ting Xu; Runli Tang; Yujun Xie; Anyi Mei; Hongwei Han; Qianqian Li; Zhen Li;

  • 作者单位

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Michael Grtzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan China;

    Michael Grtzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

    Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dye-sensitized solar cells; isolation groups; twisted structures;

    机译：染料敏化太阳能电池隔离基扭曲结构;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号