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首页> 外文期刊>Advanced Functional Materials >High-Mobility Air-Stable Naphthalene Diimide-Based Copolymer Containing Extended π-Conjugation for n-Channel Organic Field Effect Transistors
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High-Mobility Air-Stable Naphthalene Diimide-Based Copolymer Containing Extended π-Conjugation for n-Channel Organic Field Effect Transistors

机译：高迁移率的空气稳定的萘二酰亚胺基共聚物，包含扩展的π共轭结构，用于n沟道有机场效应晶体管

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摘要

A high-performance naphthalene diimide (NDI)-based conjugated polymer for use as the active layer of n-channel organic field-effect transistors (OFETs) is reported. The solution-processable n-channel polymer is systematically designed and synthesized with an alternating structure of long alkyl substituted-NDI and thienylene-vinylene-thienylene units (PNDI-TVT). The material has a well-controlled molecular structure with an extended π-conjugated backbone, with no increase in the LUMO level, achieving a high mobility and highly ambient stable n-type OFET. The top-gate, bottom-contact device shows remarkably high electron charge-carrier mobility of up to 1.8 cm~2 V~(-1) s~(-1) (I_(on)/I_(off)-10~6) with the commonly used polymer dielectric, poly(methyl methacrylate) (PMMA). Moreover, PNDI-TVT OFETs exhibit excellent air and operation stability. Such high device performance is attributed to improved π-π intermolecular interactions owing to the extended π-conjugation, apart from the improved crystallinity and highly interdigitated lamellar structure caused by the extended π-π backbone and long alkyl groups.
机译：报道了一种高性能的基于萘二酰亚胺（NDI）的共轭聚合物，用作n沟道有机场效应晶体管（OFET）的有源层。可溶液处理的n通道聚合物是系统设计和合成的，具有长烷基取代的NDI和亚噻吩基-亚乙烯基-亚噻吩基单元（PNDI-TVT）的交替结构。该材料具有良好的分子结构和扩展的π共轭骨架，LUMO含量没有增加，实现了高迁移率和高度环境稳定的n型OFET。顶栅底接触器件显示出极高的电子载流子迁移率，高达1.8 cm〜2 V〜（-1）s〜（-1）（I_（on）/ I_（off）-10〜6 ）和常用的聚合物电介质聚（甲基丙烯酸甲酯）（PMMA）。此外，PNDI-TVT OFET具有出色的空气和操作稳定性。如此高的器件性能归因于由于扩展的π共轭而导致的改进的π-π分子间相互作用，除了由扩展的π-π主链和长烷基所引起的改善的结晶度和高度相互指状的层状结构。

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  • 来源
    《Advanced Functional Materials》 |2013年第46期|5719-5727|共9页
  • 作者

    Ran Kim; Paul S. K. Amegadze; Il Kang; Hui-Jun Yun; Yong-Young Noh; Soon-Ki Kwon; Yun-Hi Kim;

  • 作者单位

    Department of Chemistry and RINS Gyeongsang National University 501 Jinju Daero, Jinju, 660-701, Republic of Korea;

    Department of Energy and Materials Engineering Dongguk University 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea;

    School of Materials Science & Engineering and ERI Gyeongsang National University 501 Jinju Daero, Jinju, 660-701, Republic of Korea;

    School of Materials Science & Engineering and ERI Gyeongsang National University 501 Jinju Daero, Jinju, 660-701, Republic of Korea;

    Department of Energy and Materials Engineering Dongguk University 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea;

    School of Materials Science & Engineering and ERI Gyeongsang National University 501 Jinju Daero, Jinju, 660-701, Republic of Korea;

    Department of Chemistry and RINS Gyeongsang National University 501 Jinju Daero, Jinju, 660-701, Republic of Korea;

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