Structural analysis of organic semiconductor composites

根据IDTechEx的预测，到2030年，全球印刷/柔性电子产品市场规模将达到3000亿美元 最新报告。为了使印刷电子更接近现实，高性能有机半导体 印刷有机薄膜晶体管(OTFT)所需，有机薄膜晶体管是印刷电路的关键元件。非常 近年来，有机半导体复合材料结合了小分子的高迁移率 半导体和聚合物优异的溶液加工性被认为是最有前途的 用于场外晶体管的半导体材料。然而，由于复合的性质，半导体复合薄膜 通常在微结构形态上表现出很大的变化，这对器件有很大的影响 性能。迫切需要对有机半导体复合材料的形貌进行研究 通过系统工程的方法，对胶片的相关性有一个基本的了解 形态和器件性能。 在加拿大施乐研究中心的支持下，我们提出了NSERC CRD项目，以进行 有机半导体复合材料微结构形态的基础研究 光谱学和显微技术。这项研究的结果将绘制出不同的 具有代表性的有机半导体复合材料的形态性质，并将关联 形态对半导体复合材料电性能的影响。两个模型系统，聚合 半导体/碳纳米管复合材料和聚合物/高迁移率小分子半导体 复合体，将被调查。对这两个模型系统的研究将使我们更好地理解 为高性能半导体材料的设计提供了一定的指导。 高性能复合材料。一名博士生将接受研究工作方面的培训，目标是他能获得 在项目完成后进入有机电子行业。

The Global market on printed/flexible electronics is projected to be $US 300 billion in 2030 by iDTechEx's latest report. To bring the printed electronic closer to reality, high performance organic semiconductors are required for printing organic thin film transistors (OTFTs) which is the key element for printed circuits. Very recently, organic semiconductor composites, which combine the high mobility of small molecule semiconductors and the excellent solution-processability of polymers, have been shown as the most promising semiconducting materials for OTFTs. However, due to composite nature, the semiconductor composite films often exhibit large variations in micro-structural morphologies, which have a dramatic influence on device performance. There is an urgent need to investigate the morphologies of organic semiconductor composites through a systematic engineering approach to gain fundamental understanding of the correlation of film morphology and device performance. With the support from Xerox Research Centre of Canada, we propose this NSERC CRD project to conduct a fundamental study on the micro-structural morphologies of organic semiconductor composites using spectroscopy and microscopy technologies. The outcomes of this research will map out the different morphological properties of the representative organic semiconductor composites, and will correlate the morphology to electrical performance of the semiconductor composites. Two model systems, polymeric semiconductor/carbon nanotube composite and polymer/high mobility small molecular semiconductor composite, will be investigated. The study of these two model systems will provide us better understanding of semiconductor composites in solid state and offer some general guidance for design of specific high performance composites. One doctoral student will be trained in the research work with the aim that he can get into the organic electronics industry when the project is completed.