Organic semiconductor polymer for organic thin film transistor containing quinoxaline ring in the backbone chain
申请人:Lee Lin Bang
公开号:US20050121668A1
公开(公告)日:2005-06-09
Disclosed herein is a composite-structured organic semiconductor polymer for an organic thin film transistor which contains quinoxaline rings in the backbone of the polymer. According to the organic semiconductor polymer, since quinoxaline rings having n-type semiconductor characteristics, such as high electron affinity, are incorporated into a polythiophene having p-type semiconductor characteristics, the organic semiconductor polymer simultaneously exhibits both p-type and n-type semiconductor characteristics. In addition, the polythienylquinoxaline derivative exhibits high solubility in organic solvents, co-planarity and stability in air. Furthermore, when the polythienylquinoxaline derivative is used as an active layer of an organic thin film transistor, the organic thin film transistor exhibits a high charge carrier mobility and a low off-state leakage current.
本文公开了一种复合结构有机半导体聚合物,用于有机薄膜晶体管,其中聚合物的骨架中含有喹啉环。根据这种有机半导体聚合物,由于将具有n型半导体特性(如高电子亲和力)的喹啉环并入具有p型半导体特性的聚噻吩中,因此有机半导体聚合物同时表现出p型和n型半导体特性。此外,聚噻吩基喹啉衍生物在有机溶剂中具有高溶解度,在空气中具有共平面性和稳定性。此外,当将聚噻吩基喹啉衍生物用作有机薄膜晶体管的有源层时,有机薄膜晶体管表现出高载流子迁移率和低关断漏电流。