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首页> 外文期刊>Journal of Imaging Science and Technology >Influence of Acceptor Units with the Trifluoromethyl Group on Charge Transport in Donor-Acceptor Semiconducting Copolymer Films
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Influence of Acceptor Units with the Trifluoromethyl Group on Charge Transport in Donor-Acceptor Semiconducting Copolymer Films

机译：具有三氟甲基的受体单元对给体-受体半导体共聚物薄膜中电荷传输的影响

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摘要

The authors report that the conversion of the charge-transfer characteristics in benzodithiophene-thiadiazolo-quinoxaline (BDT-TAQ)-based donor (D)-acceptor (A) semi-conducting copolymer, wherein the BDT moiety functions as the donor part and the TAQ block functions as the acceptor unit, is possible by adding trifluoromethyl groups to the TAQ-acceptor unit. The charge-transport characteristics of the BDT-TAQ films were investigated using a transistor platform, where the semiconducting films served as the active channel layer. The BDT-TAQ-based polymeric thin-film transistors (PTFTs) clearly show ambipolar characteristics that enable both electron and hole transport in the semiconducting polymer channel. By contrast, the PTFTs with BDT-TAQ-CF3 as an active layer exhibit only n-type transport characteristics. These results suggest that the trifluoromethyl groups added to the acceptor unit of the BDT-TAQ-based D-A semiconductor copolymer change (reduce) the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels of the semiconductor copolymer film. (C) 2018 Society for Imaging Science and Technology.
机译：作者报告说，在基于苯并二噻吩-噻二唑-喹喔啉（BDT-TAQ）的供体（D）-受体（A）半导体共聚物中电荷转移特性的转化，其中BDT部分用作供体部分， TAQ嵌段起受体单元的作用，可以通过将三氟甲基加到TAQ受体单元上来实现。使用晶体管平台研究了BDT-TAQ膜的电荷传输特性，其中半导体膜用作有源沟道层。基于BDT-TAQ的聚合物薄膜晶体管（PTFT）清楚地显示了双极性特性，该特性使电子和空穴都可以在半导体聚合物通道中传输。相比之下，具有BDT-TAQ-CF3作为有源层的PTFT仅显示n型传输特性。这些结果表明，添加到基于BDT-TAQ的D-A半导体共聚物的受体单元上的三氟甲基改变（减少）了半导体共聚物膜的最高占据分子轨道（HOMO）和最低未占据分子轨道（LUMO）水平。 （C）2018年影像科学与技术学会。

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  • 来源
    《Journal of Imaging Science and Technology》 |2018年第4期|040404.1-040404.6|共6页
  • 作者

    Jin Chang-Hui; Putri Sella Kurnia; Chang Dong Wook; Lee Jiyoul;

  • 作者单位

    Pukyong Natl Univ, Coll Engn, Dept Graph Arts Engn, Sinseonro 365, Busan 48547, South Korea;

    Pukyong Natl Univ, Coll Engn, Dept Ind Chem, Sinseonro 365, Busan 48547, South Korea;

    Pukyong Natl Univ, Coll Engn, Dept Ind Chem, Sinseonro 365, Busan 48547, South Korea;

    Pukyong Natl Univ, Coll Engn, Dept Graph Arts Engn, Sinseonro 365, Busan 48547, South Korea;

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