BTQBT (bis-(1,2,5-thiadiazolo)-p-quinobis(1,3-dithiole)) Thin Films; A Promising Candidate for High Mobility Organic Transistors.

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  • Takada Masaki
    Department of Functional Molecular Science, The Graduate University for Advanced Studies, Myodaiji, Okazaki 444-8585, Japan
  • Graaf Harald
    Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
  • Yamashita Yoshiro
    Department of Electronic Science and Technology, Tokyo Institute of Technology, Ngatsuta, Midori, Yokohama 226-8502, Japan
  • Tada Hirokazu
    Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan

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BTQBT (bis-(1, 2, 5-thiadiazolo)-p-quinobis(1, 3-dithiole)) films have been prepared as active semiconducting layers of organic field effect transistors (FETs). BTQBT films showed a p-type semiconducting behavior. The hole mobility and on/off ratio of BTQBT films under ultrahigh vacuum conditions reached to 0.2 cm2/V·s and 108, respectively, by optimization of the growth conditions. These values are in the same order as those of pentacene thin films, which indicates that BTQBT molecules have a great potential for active layers of organic electronic devices.

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