Collaborative Research: Charge Transport Pathways in Semiconducting Polymer Films

合作研究：半导体聚合物薄膜中的电荷传输路径

• 批准号: 1207032
• 负责人: Harald Ade
• 金额: $ 34.8万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1207032&HistoricalAwards=false
• 关键词: Collaborative; Research; Charge; Transport; Pathways

TECHNICAL SUMMARYThe connection between charge transport and molecular order on intermediate length scales in films of semiconducting polymers will be examined. In most electrical devices, semiconducting polymer chains do not span the distance between the electrodes and the resulting electrical properties are the result of charge transport both along the chains and from chain-to-chain. Through a collaborative effort between scientists at UCSB and NCSU the charge transport pathways in semiconducting polymers will be studied by: 1) measuring the in-plane bulk and interface correlation length of the backbone of semiconducting polymers using a combination of physical and electrical characterization methods and 2) investigating transport in model block co-polymer systems with varying energetic structure to uncover how both positive and negative carriers are transported in complex systems. This work will use a novel polarized soft X-ray scattering method to probe the backbone correlation length that will enable a greater understanding of the connection between morphology and electrical transport. The scattering techniques developed in this work will have impact on characterization of both semiconducting and conventional polymers. NON-TECHNICAL SUMMARY Conjugated polymers have tremendous potential for use in cheap, flexible, light-weight devices as transistors in simple circuits, light emitting diodes, and solar cells. Improvement of our control of the properties of electrically conducting polymers will enable new types of electronic devices for use in energy conversion and biomedical diagnostics. This work will focus on the determination of the pathways of charge transport in conjugated polymers. Research in polymer electronics is highly multidisciplinary and will provide training for graduate students in materials science, chemistry, and microelectronics. The PIs and graduate students will also provide lab space and training for promising undergraduate students from underrepresented groups to advance their future careers in science and engineering. Outreach to children to promote science education in the local school districts will be done through demonstrations of flexible electronics devices by graduate student researchers at local science nights.

技术总结将检查电荷传输与分子阶在半导体聚合物膜中中间长度尺度上的连接。 在大多数电气设备中，半导体聚合物链不会跨越电极之间的距离和所得的电气性能是沿链和链到链的电荷传输的结果。通过UCSB和NCSU的科学家之间的协作努力，将通过以下方式研究半导体聚合物中的电荷传输途径：1）测量平面内部的体积和界面相关长度，半导体聚合物的骨架的长度长度，并使用模型构造型在模型co-polymers中的运输方式组合进行运输，并在模型中进行启动，并使用模型的运输方式进行启动。在复杂的系统中运输。这项工作将使用一种新型的极化软X射线散射方法来探测主链相关长度，这将使对形态和电运传输之间的联系有更深入的了解。这项工作中开发的散射技术将影响半导体和常规聚合物的表征。非技术总结共轭聚合物具有巨大的潜力，可在廉价，柔性，轻巧的设备中用作简单电路中的晶体管，发光二极管和太阳能电池。改善我们对电导电聚合物的性能的控制将使新型的电子设备用于能量转化和生物医学诊断。这项工作将集中于确定共轭聚合物中电荷传输的途径。聚合物电子学的研究是高度多学科的，将为材料科学，化学和微电子学领域的研究生提供培训。 PIS和研究生还将为来自代表性不足的团体的有前途的本科生提供实验室空间和培训，以提高其在科学和工程领域的未来职业。向儿童推广以促进当地学区的科学教育，将通过在当地科学之夜的研究生研究人员展示灵活的电子设备。