| Budget Amount *help |
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2014: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Outline of Final Research Achievements |
Here, we developed an ultra-high-resolution printing technique based on "surface selective deposition" that can deposit functional inks with 1-um resolution on flexible substrates. We used this technique to selectively deposit a metal nanoparticle ink and an organic semiconducting material, thereby allowing the large-scale fabrication of high-resolution electronic circuits including organic thin-film transistors with channels as short as 1 um under ambient atmosphere. We also developed π-junction gold nanoparticles as the electrode material which permitted room-temperature deposition of a conductive metal layer. The room-temperature process enables printing of electronic circuits without application of heat, thus thermal damage to the substrate can be totally avoided. These results indicate that this bottom-up fabrication method based on fluidic self-assembly is promising for the fabrication of large-area, high-resolution, low-cost electronics.
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