• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Photophysics of Molecular-Weight-Induced Losses in Indacenodithienothiophene-Based Solar Cells
【24h】

Photophysics of Molecular-Weight-Induced Losses in Indacenodithienothiophene-Based Solar Cells

机译：基于Indacenodithienothiophene的太阳能电池中分子重量引起的损失的光物理

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

The photovoltaic performance and optoelectronic properties of a donor-acceptor copolymer are reported based on indacenodithienothiophene (IDTT) and 2,3-bis(3-(octyloxy)phenyl)quinoxaline moieties (PIDTTQ) as a function of the number-average molecular weight (M-n). Current-voltage measurements and photoinduced charge carrier extraction by linear increasing voltage (photo-CELIV) reveal improved charge generation and charge transport properties in these high band gap systems with increasing M-n, while polymers with low molecular weight suffer from diminished charge carrier extraction because of low mobility-lifetime () product. By combining Fourier-transform photocurrent spectroscopy (FTPS) with electroluminscence spectroscopy, it is demonstrate that increasing M-n reduces the nonradiative recombination losses. Solar cells based on PIDTTQ with M-n = 58 kD feature a power conversion efficiency of 6.0% and a charge carrier mobility of 2.1 x 10(-4) cm(2) V-1 s(-1) when doctor bladed in air, without the need for thermal treatment. This study exhibits the strong correlations between polymer fractionation and its optoelectronics characteristics, which informs the polymer design rules toward highly efficient organic solar cells.
机译：根据indacenodithienothiophene（IDTT）和2,3-双（3-（辛基氧基）苯基）喹喔啉部分（PIDTTQ）报道的供体-受体共聚物的光电性能和光电性能是数均分子量（ Mn）。电流电压测量和通过线性增加电压（photo-CELIV）进行的光诱导电荷载流子提取显示，在这些高带隙系统中，随着Mn的增加，电荷产生和电荷传输性能得到了改善，而低分子量聚合物的电荷载流子提取却由于低移动寿命（）产品。通过将傅里叶变换光电流光谱法（FTPS）与电致发光光谱法相结合，证明增加M-n可以减少非辐射重组损失。当刮刀在空气中刮擦时，基于Mn = 58 kD的PIDTTQ的太阳能电池具有6.0％的功率转换效率和2.1 x 10（-4）cm（2）V-1 s（-1）的载流子迁移率。需要热处理。这项研究展示了聚合物分馏与其光电子特性之间的强相关性，这为高效有机太阳能电池的聚合物设计规则提供了依据。

著录项

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