Inducement of Azimuthal Molecular Orientation of Pentacene by Imprinted Periodic Groove Patterns for Organic Thin-Film Transistors

Authors

  • Sung Jin Jo,

    1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea)
    Search for more papers by this author
  • Chang Su Kim,

    1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea)
    Search for more papers by this author
  • Min Jung Lee,

    1. Center for Intelligent Nano-Bio Materials, Division of Nano Sciences and Department of Chemistry, Ewha Womans University 11-1 Daehyun-dong, Seodaemun-gu, Seoul, 120-750 (Korea)
    Search for more papers by this author
  • Jong Bok Kim,

    1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea)
    Search for more papers by this author
  • Seung Yoon Ryu,

    1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea)
    Search for more papers by this author
  • Joo Hyon Noh,

    1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea)
    Search for more papers by this author
  • Kyuwook Ihm,

    1. Pohang Accelerator Laboratory, Pohang University of Science and Technology, San-31 Hyoja-dong, Pohang, Kyungbuk, 790-784 (Korea)
    Search for more papers by this author
  • Hong Koo Baik,

    Corresponding author
    1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea)
    • Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749 (Korea).
    Search for more papers by this author
  • Youn Sang Kim

    Corresponding author
    1. Center for Intelligent Nano-Bio Materials, Division of Nano Sciences and Department of Chemistry, Ewha Womans University 11-1 Daehyun-dong, Seodaemun-gu, Seoul, 120-750 (Korea)
    • Center for Intelligent Nano-Bio Materials, Division of Nano Sciences and Department of Chemistry, Ewha Womans University 11-1 Daehyun-dong, Seodaemun-gu, Seoul, 120-750 (Korea).
    Search for more papers by this author

  • This work was supported by the Basic Research Program of the Korea Science and Engineering Foundation (KOSEF, Grant # R01-2006-000-11066-0), the SRC program of MOST/KOSEF through the Center for Intelligent Nano-Bio Materials at Ewha Womans University (Grant # R11-2005-008-00000-0), and the “SystemIC 2010” project of Commerce, Industry and Energy. A Seoul Science Fellowship from the Seoul Metropolitan Government supports S. J. Jo, and the other authors are supported by the Brain Korea 21(BK 21) fellowship of the Ministry of Education of Korea. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

original image

A new strategy for control of the in-plane orientation of pentacene is introduced using nanometer-scale periodic groove patterns as an alignment layer. Compared to pentacene films that are not aligned, an enhanced field effect mobility of 1.67 cm2 V−1 s−1 has been achieved when the optimal π-orbital overlap direction is parallel to the direction of the current flow.

Ancillary