Solution-Sheared Organic Semiconductor Films Show Promise in Electronics Research

Strategic Insights -

Researchers at Yamagata University have successfully fabricated organic semiconductor films using hydrophobic banks, yielding high crystallinities and patterning. The films, composed of the iodine-containing material 2-iodoanthra [2, 3-b] thieno [2, 3-d] thiophene (I-ATT), exhibited enhanced performance in organic thin-film transistors, with a respective mobility, threshold potential, and on/off ratio of 0.6 cm2 V-1 s-1, -11 V, and 103. The study also demonstrated the reliability of inverter and NAND circuits based on a pseudo-complementary metal-oxide-semiconductor configuration.

Key Takeaways:

  • Researchers at Yamagata University developed a method to fabricate solution-sheared organic semiconductor films with high crystallinities and patterning using hydrophobic banks.
  • The I-ATT material exhibited enhanced performance in organic thin-film transistors with a mobility of 0.6 cm2 V-1 s-1, threshold potential of -11 V, and on/off ratio of 103.
  • Inverter and NAND circuits based on a pseudo-complementary metal-oxide-semiconductor configuration were demonstrated to be reliable.
  • The study suggests that solution-sheared I-ATT films have the potential for large-scale integration into printed electronics.
  • The research has been peer-reviewed and published in the Japanese Journal of Applied Physics.
  • The authors of the study include Yasunori Takeda, Miho Abiko, Kaori Watanabe, Ryoko Horie, Makoto Mizukami, Kakeru Hasumi, Amane Matsunaga, and Hiroshi Katagiri.

Statistics:

  • Mobility of 0.6 cm2 V-1 s-1 in I-ATT-based organic thin-film transistors
  • Threshold potential of -11 V in I-ATT-based organic thin-film transistors
  • On/off ratio of 103 in I-ATT-based organic thin-film transistors
  • 64 (9) issue number of the Japanese Journal of Applied Physics where the research was published
  • 2025 publication year of the Japanese Journal of Applied Physics

Sources:

  • Fabrication of Organic Integrated Circuits Based On the Iodine-containing Organic Semiconductor I-ATT Using Solution Shearing and a Liquid-repellent Pattern. Japanese Journal of Applied Physics, 2025;64(9):090903.
  • Japanese Journal of Applied Physics, Iop Publishing Ltd, Temple Circus, Temple Way, Bristol BS1 6BE, England (www.jsap.or.jp; jjap.jsap.jp/)
  • Yasunori Takeda, Yamagata University, Innovat Ctr Organ Elect, 1-808-48 Arcadia, Yonezawa, Yamagata 9920119, Japan