Patterning Large Arrays of Organic Semiconductor Single Crystals

该项目提供了一个基本的理解，影响有机半导体从气相的成核和生长的参数，用于制造具有单晶沟道的有机晶体管器件的大阵列。由于薄膜的多晶性质，薄膜器件由于在晶界处的俘获而很少达到单晶器件的高迁移率。为了显著地改善器件性能，提供单晶和单晶膜以生产用于实际应用的单晶器件的大阵列。虽然技术上具有挑战性，但单晶器件的大阵列的实现将导致有机半导体基器件的显著性能改善。我们将进行详细的研究，以探讨表面拓扑结构的影响，表面化学官能团和有机半导体之间的化学相互作用，化学基团的取向，化学基团的排序，以及化学基团在基底表面上的分布。有机半导体是塑料电路中的有源元件，特别是那些使用场效应晶体管（FET）作为开关或逻辑元件的有机半导体。提供用于图案化的机制，并研究影响有机半导体从气相成核和生长的众多参数，以制造具有单晶沟道的有机晶体管器件的大阵列，将促进对有机半导体成核和生长的一般理解。这项研究将暴露两个代表性不足的研究生和本科生有机化学，表面化学，材料和薄膜表征，器件制造和器件表征。他们还将学习解决问题的多学科方法。

This project provides a fundamental understanding the parameters that affect the nucleation and growth of organic semiconductors from vapor phase for the fabrication of large arrays of organic transistor devices with single crystal channels. Due to the polycrystalline nature of thin films, thin film devices rarely reach the high mobilities of single crystal devices due to trapping at grain boundaries. In order to significantly improve device performance, single crystals and single crystalline films are being provided to produce large arrays of single crystal devices for practical applications. Although technologically challenging, the realization of large arrays of single crystal devices will lead to dramatic performance improvement of organic semiconductor based devices. Detailed studies will be carried out to investigate effects of surface topology,chemical interactions between surface chemical functionalities and organic semiconductors, orientation of the chemical groups, ordering of the chemical groups, and distribution of chemical groups on the substrate surface.%%% Organic semiconductors are promising candidates as the active elements in plastic circuits, particularly those using field-effect transistors (FETs) as switching orlogic elements. Providing the mechanisms for patterning and investigating the numerous parameters that affect the nucleation and growth of organic semiconductors fromvapor phase for the fabrication of large arrays of organic transistor devices with single crystal channels will advance an understanding of organic semiconductor nucleation and growth in general. This research will expose both under-represented graduate students and undergraduates to organic chemistry, surface chemistry, materials and thin film characterization, device fabrication, and device characterization. They will also learn the multidisciplinary approach to problem solving.