Influences of Structure Defects on the Performances of Solution-Processed OFET


主题:   Influences of Structure Defects on the Performances of Solution-Processed OFET 主讲人:   王建隆地点:   材料学院楼C315时间:   2018-08-09 09:30:00组织单位:   东华大学材料学院、纤维材料改性国家重点实验室


AssociateProfessor (2015-Present), Assistant Professor (2011-2015) at Department ofApplied Chemistry, National Chiao Tung University; PostdoctoralResearch Associate (2011) at Department of Polymer Engineering, University ofAkron; PhD (2011) at Department of Polymer Science, University of Akron; MS(2001) at Department of Chemistry, National Taiwan University; BS (1999) atDepartment of Chemistry, National Taiwan Normal University.

ResearchInterests: Polymer physics、crystallography of polymers andconjugated molecules, self-assembly of giant molecules, OFET, OPV.


Abstract: Thequality of charge-transport channel strongly affects the performances oforganic field-effect transistors (OFET). To achieve higher charge mobility,solution-processed single-crystal (SPSC) techniques have been used to build upcrystal arrays of conjugated molecules as effective charge-transport channels.[1] Nevertheless, subtle structuraldefects in the crystal arrays truncate the charge-transport pathway and affectthe OFET mobility. In this presentation, characterization procedures toidentify the low-angle grain boundary (LAGB),[2]polymorphism,and crystallinity[3] ofthe crystal arrays of conjugated molecules will be demonstrated. Followingthat, the influences of lattice alignment, packing structure and crystallinityon the OFET mobility will be discussed. It was found that (1) unification thelattice orientation and packing structure, and (2) continuity of thecrystalline domain play important roles in the performances and reproducibilityof the solution-processed OFETs.


视频:   摄影: 撰写:孙宾  信息员:星禧  编辑:朱一超



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