...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & environmental science >A single atom change 'switches-on' the solar-to-energy conversion efficiency of Zn-porphyrin based dye sensitized solar cells to 10.5%
【24h】

A single atom change 'switches-on' the solar-to-energy conversion efficiency of Zn-porphyrin based dye sensitized solar cells to 10.5%

机译：单个原子变化可将基于锌卟啉的染料敏化太阳能电池的太阳能转换效率“接通”至10.5％

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

In this work we report how crucial is the correct design of the porphyrin sensitizers in Dye Sensitized Solar Cells (DSSCs). Only a single atom change switches-on the efficiency from 2-3% to over 10% under standard measurement conditions. We used the 2,1,3-benzothiadazole (BDT) group, as a pi-conjugated linker, for the porphyrin LCVC01, a thiophene moiety for the porphyrin LCVC02 and also the furan group for the LCVC03 porphyrin, as molecular spacers between the BDT fragment and the molecule anchoring group, respectively. These three porphyrins were investigated for their application in DSSC devices. All the devices were characterized and found to achieve a record cell efficiency of 10.5% for LCVC02 but only 3.84% and 2.55% for LCVC01 and LCVC03 respectively. On one hand, the introduction of a thiophene, instead of a furan group, illustrates the importance of introducing a chemical group as a spacer, such as thiophene, between the BDT and the anchoring group. On the other hand, the selection of this group has to be correct because the change of a single atom increases the charge recombination rate and decreases the device performance. These changes can be rationalized by analyzing the dye dipoles and their interactions.
机译：在这项工作中，我们报告了染料敏化太阳能电池（DSSC）中卟啉敏化剂的正确设计至关重要。在标准测量条件下，只有一个原子变化就能将效率从2-3％切换到10％以上。我们将2,1,3-苯并噻唑（BDT）组用作pi卟啉LCVC01的pi共轭连接基，将卟啉LCVC02的噻吩部分以及LCVC03卟啉的呋喃基用作BDT之间的分子间隔基片段和分子锚定基团。研究了这三种卟啉在DSSC装置中的应用。对所有器件进行了特性分析，发现对于LCVC02，其电池效率均达到创纪录的10.5％，而对于LCVC01和LCVC03，其电池效率分别仅为3.84％和2.55％。一方面，引入噻吩而不是呋喃基团说明了在BDT和锚定基团之间引入化学基团作为间隔基的重要性，例如噻吩。另一方面，该基团的选择必须是正确的，因为单个原子的变化会增加电荷复合率并降低器件性能。这些变化可以通过分析染料偶极子及其相互作用来合理化。

著录项

  • 来源
    《Energy & environmental science》 |2015年第4期|1368-1375|共8页
  • 作者

    Cabau Lydia; Kumar Challuri Vijay; Moncho Antonio; Clifford John N.; Lopez Nuria; Palomares Emilio;

  • 作者单位

    Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain;

    Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain;

    Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain;

    Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain;

    Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain;

    Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain|Catalan Inst Res & Adv Studies ICREA, E-08010 Barcelona, Spain;

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

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