高性能双极性聚合物半导体材料与晶体管器件

High Performance Ambipolar Polymer Semiconductors and Transistors

有机聚合物半导体材料与晶体管器件是融合了化学、材料、半导体以及微电子等学科的前沿交叉研究方向.聚合物半导体材料分子是该领域研究的重要内容,其中双极性聚合物分子半导体材料,兼具了电子和空穴的双重载流子输运能力而受到学术界的广泛关注.本文总结了双极性聚合物半导体材料与器件的研究进展,重点介绍了我们在D-A型双极性聚合物分子半导体材料设计、加工技术与器件制备以及功能应用方面的研究工作,并论述了双极性聚合物分子半导体材料与器件研究过程中存在的科学问题及发展方向.

Organic polymer semiconductors and field-effect transistors(OFET) are the frontier interdisciplinary research directions of chemistry, materials, semiconductors and microelectronics. Polymer semiconductors are the important research contents in this field, among which ambipolar semiconducting polymer materials, which have the double carrier transport ability, have received extensive attention in the academic field. This unique property gives ambipolar semiconducting polymers many applications, such as low-cost logic circuit, organic light-emitting transistors(OLETs), low-energy cost memory device, and near infrared detectors. In this feature article, the research progress of ambipolar polymer semiconductors and transistors is summarized. First, we give brief introduction of the configuration of OFETs and its related parameters. And then, our research work in designing new ambipolar polymers based on bis-acceptors or enhancing acceptor ability with withdraw group are introduced.In fact, except designing of polymer structures, solution-process methods are also very important for low-cost and large-area organic devices. Therefore, different solution-processing technologies, such as spin-coating, sheercoating, bar-coating, inkjet printing, screen printing, and slot-die, are discussed for achieving high performance OFETs. Further, functional application of D-A ambipolar polymer semiconductors in inverter circuit, OLETs, and memory devices are mainly described in this paper. Finally, the scientific problems and development direction in the research process of ambipolar polymer semiconductors and devices are also discussed.