• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Crystallization-Induced Phase Separation in Solution-Processed Small Molecule Bulk Heterojunction Organic Solar Cells
【24h】

Crystallization-Induced Phase Separation in Solution-Processed Small Molecule Bulk Heterojunction Organic Solar Cells

机译：溶液处理的小分子本体异质结有机太阳能电池中的结晶诱导相分离

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 driving forces and processes associated with the development of phase separation upon thermal annealing are investigated in solution-processed small molecule bulk heterojunction (BHJ) organic solar cells utilizing a diketopyrrolopyrrole-based donor molecule and a fullerene acceptor (PCBM). In-situ thermal annealing X-ray scattering is used to monitor the development of thin film crystallization and phase separation and reveals that the development of blend phase separation strongly correlates with the nuclea-tion of donor crystallites. Additionally, these morphological changes lead to dramatic increases in blend electron mobility and solar cell figures of merit. These results indicate that donor crystallization is the driving force for blend phase separation. It is hypothesized that donor crystallization from an as-cast homogeneous donor:acceptor blend simultaneously produces donor-rich domains, consisting largely of donor crystallites, and acceptor-rich domains, formed from previously mixed regions of the film that have been enriched with acceptor during donor crystallization. Control of donor crystallization in solution-processed small molecule BHJ solar cells employing PCBM is thus emphasized as an important strategy for the engineering of the nanoscale phase separated, bicontinuous morphology necessary for the fabrication of efficient BH) photovoltaic devices.
机译：在利用二酮吡咯并吡咯基供体分子和富勒烯受体（PCBM）的固溶处理小分子本体异质结（BHJ）有机太阳能电池中，研究了与热退火时相分离发展相关的驱动力和过程。原位热退火X射线散射用于监测薄膜结晶和相分离的发展，并揭示共混相分离的发展与供体晶体的核化密切相关。另外，这些形态变化导致混合电子迁移率和太阳能电池品质因数的显着提高。这些结果表明供体结晶是共混物相分离的驱动力。假设从铸态均匀的施主：受主混合物中施主结晶同时产生了富施主区域，主要由施主微晶组成，而受主富集的区域则由薄膜的先前混合区域形成，该区域先前在受体中富集了受体。供体结晶。因此，在采用PCBM的溶液处理小分子BHJ太阳能电池中，施主结晶的控制已被强调为工程化制造高效BH）光伏器件所需的纳米级相分离，双连续形态的重要策略。

著录项

  • 来源
    《Advanced Functional Materials》 |2014年第23期|3543-3550|共8页
  • 作者

    Alexander Sharenko; Martijn Kuik; Michael F. Toney; Thuc-Quyen Nguyen;

  • 作者单位

    Materials Department University of California Santa Barbara, CA 93106, USA,Center for Polymers and Organic Solids University of California Santa Barbara, CA 93106, USA;

    Center for Polymers and Organic Solids University of California Santa Barbara, CA 93106, USA;

    Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park, CA 94025, USA;

    Center for Polymers and Organic Solids University of California Santa Barbara, CA 93106, USA;

  • 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