Get access

High-Mobility Air-Stable Naphthalene Diimide-Based Copolymer Containing Extended π-Conjugation for n-Channel Organic Field Effect Transistors

Authors

  • Ran Kim,

    1. Department of Chemistry and RINS, Gyeongsang National University, 501 Jinju Daero, Jinju, 660-701, Republic of Korea
    Search for more papers by this author
  • Paul S. K. Amegadze,

    1. Department of Energy and Materials Engineering, Dongguk University, 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea
    Search for more papers by this author
  • Il Kang,

    1. School of Materials Science & Engineering and ERI, Gyeongsang National University, 501 Jinju Daero, Jinju, 660-701, Republic of Korea
    Search for more papers by this author
  • Hui-Jun Yun,

    1. School of Materials Science & Engineering and ERI, Gyeongsang National University, 501 Jinju Daero, Jinju, 660-701, Republic of Korea
    Search for more papers by this author
  • Yong-Young Noh,

    Corresponding author
    1. Department of Energy and Materials Engineering, Dongguk University, 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea
    • Yong-Young Noh, Department of Energy and Materials Engineering, Dongguk University, 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea

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

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

    Search for more papers by this author
  • Soon-Ki Kwon,

    Corresponding author
    1. School of Materials Science & Engineering and ERI, Gyeongsang National University, 501 Jinju Daero, Jinju, 660-701, Republic of Korea
    • Yong-Young Noh, Department of Energy and Materials Engineering, Dongguk University, 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea

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

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

    Search for more papers by this author
  • Yun-Hi Kim

    Corresponding author
    1. Department of Chemistry and RINS, Gyeongsang National University, 501 Jinju Daero, Jinju, 660-701, Republic of Korea
    • Yong-Young Noh, Department of Energy and Materials Engineering, Dongguk University, 26, Pil-dong, 3-ga, Jung-gu, Seoul, 100-715, Republic of Korea

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

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

    Search for more papers by this author

Abstract

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 cm2 V−1 s−1 (Ion/Ioff = 106) 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.

Ancillary