• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Morphology Development in Amorphous Polymer:Fullerene Photovoltaic Blend Films During Solution Casting
【24h】

Morphology Development in Amorphous Polymer:Fullerene Photovoltaic Blend Films During Solution Casting

机译：溶液浇铸过程中非晶态聚合物：富勒烯光伏共混膜的形貌发展

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 evolution of film structure is reported during solution casting of PCDTBT:PC_(70)BM 1:4 wt%, a polymerfullerene blend system that finds application in an organic photovoltaic device. Using the complimentary techniques of grazing-incidence wide-angle X-ray scattering and spectroscopic ellipsometry, a number of distinct processes that occur during film formation are identified. This includes the growth of fullerene molecules into nanoscale aggregates, the onset of which coincides with the solubility limit of the material in the casting solvent being reached. An apparent delay in Bragg scatter from the PCDTBT-rich phase of the film suggests that, for the film composition studied here, the aggregation of PC_(70)BM precedes weak self-organisation of the conjugated polymer. This behaviour is compared with the drying dynamics of a number of different polymer:fullerene blends that each contain a high weight fraction of fullerene molecules, and a range of comparable solid concentrations are identified beyond which the precipitation of fullerene aggregates from solution occurs. These observations provide an insight into the development of structure in relatively amorphous polymerfullerene blends for organic photovoltaic applications and potentially assists the future optimisation of this category of materials.
机译：据报道，在PCDTBT：PC_（70）BM 1：4 wt％的溶液浇铸过程中，膜结构的演变是一种聚合物富勒烯共混体系，已在有机光伏器件中得到应用。使用掠入射广角X射线散射和椭圆偏振光谱的互补技术，可以确定在成膜过程中发生的许多不同过程。这包括富勒烯分子生长成纳米级聚集体，其开始与材料在铸造溶剂中的溶解度极限相符。薄膜从富含PCDTBT的相开始出现布拉格散射的明显延迟表明，对于此处研究的薄膜组成，PC_（70）BM的聚集先于共轭聚合物的弱自组织。将该行为与许多不同的聚合物：富勒烯共混物的干燥动力学进行了比较，每种共混物均包含高重量分数的富勒烯分子，并且确定了一系列可比较的固体浓度，超过该浓度，富勒烯聚集体就会从溶液中沉淀出来。这些观察提供了对于用于有机光伏应用的相对无定形的聚合物富勒烯共混物的结构发展的见识，并且潜在地有助于该材料类别的未来优化。

著录项

  • 来源
    《Advanced Functional Materials》 |2014年第5期|659-667|共9页
  • 作者

    Andrew J. Pearson; Tao Wang; Alan D. F. Dunbar; Hunan Yi; Darren C. Watters; David M. Coles; Paul A. Staniec; Ahmed Iraqi; Richard A. L. Jones; David G. Lidzey;

  • 作者单位

    Department of Physics & Astronomy University of Sheffield Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK;

    Department of Physics & Astronomy University of Sheffield Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK;

    Department of Chemical and Biological Engineering The University of Sheffield Sir Robert Hadfield Building Mappin St, Sheffield, S1 3JD, UK;

    Department of Chemistry University of Sheffield Sheffield, S3 7HF, UK;

    Department of Physics & Astronomy University of Sheffield Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK;

    Department of Physics & Astronomy University of Sheffield Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK;

    Diamond Light Source Ltd Diamond House Harwell Science and Innovation Campus Didcot, Oxfordshire, OX11 ODE, UK;

    Department of Chemistry University of Sheffield Sheffield, S3 7HF, UK;

    Department of Physics & Astronomy University of Sheffield Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK;

    Department of Physics & Astronomy University of Sheffield Hicks Building, Hounsfield Road, 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