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首页> 外文期刊>RSC Advances >High-mobility flexible pentacene-based organic field-effect transistors with PMMA/PVP double gate insulator layers and the investigation on their mechanical flexibility and thermal stability
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High-mobility flexible pentacene-based organic field-effect transistors with PMMA/PVP double gate insulator layers and the investigation on their mechanical flexibility and thermal stability

机译：基于高迁移率的柔性五烯基有机场效应晶体管，采用PMMA / PVP双栅极绝缘子层以及对其机械柔性和热稳定性的研究

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摘要

In this paper, we fabricated high performance flexible pentacene-based OFETs with low-k polymethylmethacrylate (PMMA, k = 3.5) and high-k dielectrics cross-linked poly(4-vinylphenol) (PVP, k = 4.1) as double gate insulator layers on poly(ethylene terephthalate) (PET) plastic substrate. The field-effect mobility (mu) of flexible pentacene-based OFETs was greatly increased from 0.66 cm(2) V-1 s(-1) to 1.51 cm(2) V-1 s(-1), meanwhile, their high electrical insulating properties were also well maintained which resulted in high ON/OFF current ratio of 105. The control experiments showed that the high performance flexible OFETs were mainly attributed to the PMMA/PVP double dielectric layers which not only have high electrical insulating property but also favor the growth of pentacene films. The flexible OFETs still showed excellent mechanical flexibility when they were bent 1000 successive mechanical bending cycles and held under the bending state for 2 hours at a radius of 3.5 mm. In addition, the flexible OFETs also showed high thermal stability, which exhibited the mobility of 0.72 cm(2) V-1 s (-1), the positive shift direction of VTH, the ON/OFF current ratio of 105 after heating to 100 degrees C for 2 hours in the atmosphere. Our results suggested that the PMMA/PVP double dielectric films were very suitable for the dielectric layer of the flexible OFETs.
机译：在本文中，我们用低k聚甲基甲基丙烯酸甲酯（PMMA，k = 3.5）和高k电介质交联聚（4-乙烯基酚）（PVP，K = 4.1）作为双栅极绝缘体，制造了高性能柔性五烯基。聚（乙二醇酯）（PET）塑料基材上的层。与0.66cm（2）V-1s（-1）到1.51cm（2）V-1 s（-1）的柔性五烯基的近期乙烯基的场效应迁移率（mu）大大增加到1.51cm（2）V-1 s（-1）。它们的高度也保持良好的电绝缘性能，导致高于/关闭电流比为105.对照实验表明，高性能柔性柔性主要归因于PMMA / PVP双介电层，其不仅具有高电绝缘性，还归因于高电绝缘性赞成五苯薄膜的生长。当它们弯曲1000个连续的机械弯曲循环时，柔性物质仍然显示出优异的机械柔韧性，并在3.5mm的半径下保持在弯曲状态下2小时。此外，柔性物质还显示出高热稳定性，其迁移率为0.72cm（2）V-1 s（-1），vth的正换档方向，加热至100后105的开/关电流比率大气中2小时的℃。我们的研究结果表明PMMA / PVP双介电膜非常适合于柔性的介电层。

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  • 来源
    《RSC Advances》 |2015年第115期|共7页
  • 作者

    Yi Mingdong; Guo Jialin; Li Wen; Xie Linghai; Fan Quli; Huang Wei;

  • 作者单位

    Nanjing Univ Posts &

    Telecommun Key Lab Organ Elect &

    Informat Displays Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Key Lab Organ Elect &

    Informat Displays Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Key Lab Organ Elect &

    Informat Displays Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Key Lab Organ Elect &

    Informat Displays Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Key Lab Organ Elect &

    Informat Displays Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Key Lab Organ Elect &

    Informat Displays Nanjing 210023 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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