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An isoindigo-bithiazole-based acceptor-acceptor copolymer for balanced ambipolar organic thin-film transistors

查看全文 作　　者：Ping [1]Li;Hanlin [3]Wang;Lanchao [3]Ma;Long [1]Xu;Fei [1]Xiao;Zhengran [1]Yi;Yunqi [3]Liu;Shuai [1,2]Wang 高影响力作者 机构地区：[1]Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;[2]Flexible Electronics Research Center, State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;[3]State Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China高影响力机构 出　　处：《Science China Chemistry》索引2016年第59卷第6期,共5页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (51173055, 21504026, 51572094);the National Basic Research Program of China (2013CBA01600);the China Postdoctoral Science Foundation (2013M542009) 摘　　要：Balanced carrier transport is observed in acceptor-acceptor (A-A′) type polymer for ambipolar organic thin-film transistors B (OTFTs). It is found that the incorporation of two electron-accepting moieties (BTz and IIG) into a polymer main chain to form A-A′ polymer PIIG-BTz could lower highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels and facilitate good molecular stacking of the polymer. Ambipolar transistor behaviour for PIIG-BTz, with the balanced hole and electron mobilities of 0.030 and 0.022 cm2 V-1 s-1 was observed in OTFT devices, respectively. The study in this work reveals that the utilization of acceptor-acceptor (A-A′) structure in polymer main chain can be a feasible strategy to develop ambipolar polymer semiconductors. 关 键 词：有机薄膜晶体管 双极性 平衡孔 聚合物半导体 共聚物 噻唑基 电子迁移率 分子轨道
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