• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Evolution of Structure, Optoelectronic Properties, and Device Performance of Polythiophene:Fullerene Solar Cells During Thermal Annealing
【24h】

Evolution of Structure, Optoelectronic Properties, and Device Performance of Polythiophene:Fullerene Solar Cells During Thermal Annealing

机译：聚噻吩：富勒烯太阳能电池热退火过程中结构，光电特性和器件性能的演变

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

We use spectroscopic ellipsometry to study the evolution of structure and optoelectronic properties of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) photovoltaic thin film blends upon thermal annealing. Four distinct processes are identified: the evaporation of residual solvent above the glass transition temperature of the blend, the relaxation of non-equilibrium molecular conformation formed through spin-casting, the crystallization of both P3HT and PCBM components, and the phase separation of the P3HT and PCBM domains. Devices annealed at 150 °C for between 10 and 60 min exhibit an average power conversion efficiency of around 4.0%. We find that the rate at which the P3HT/PCBM is returned to room temperature is more important in determining device efficiency than the duration of the isothermal annealing process. We conclude that the rapid quenching of a film from the annealing temperature to room temperature hampers the crystallization of the P3HT and can trap non-equilibrium morphological states. Such states apparently impact on device short circuit current, fill factor and, thus, operational efficiency.
机译：我们使用椭圆偏振光谱法研究了聚（3-己基噻吩）（P3HT）和[6,6]-苯基C61-丁酸甲酯（PCBM）光伏薄膜共混物在热退火后的结构和光电性能的演变。确定了四个不同的过程：在共混物的玻璃化转变温度以上蒸发残留溶剂，通过旋铸形成的非平衡分子构象松弛，P3HT和PCBM组分的结晶以及P3HT的相分离和PCBM域。在150°C下退火10至60分钟的设备显示出约4.0％的平均功率转换效率。我们发现，在确定器件效率方面，P3HT / PCBM返回室温的速率比等温退火过程的持续时间更为重要。我们得出的结论是，从退火温度到室温的薄膜快速淬火会阻碍P3HT的结晶，并可能捕获非平衡形态状态。这种状态显然会影响设备的短路电流，填充系数，从而影响工作效率。

著录项

  • 来源
    《Advanced Functional Materials》 |2011年第8期|p.1383-1390|共8页
  • 作者

    Tao Wang; AndrewJ. Pearson; David C. Lidzey; Richard A. L Jones;

  • 作者单位

    Department of Physics and Astronomy University of Sheffield Sheffield, S3 7RH, UK;

    Department of Physics and Astronomy University of Sheffield Sheffield, S3 7RH, UK;

    Department of Physics and Astronomy University of Sheffield Sheffield, S3 7RH, UK;

    Department of Physics and Astronomy University of Sheffield Sheffield, S3 7RH, UK;

  • 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