| Budget Amount *help |
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2016: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
To improve the performance of polymer-based organic field-effect transistors (OFETs) and reduce the device-to-device variation, we have developed coating methods of high mobility organic semiconductors with capability of controlling molecular orientation. We established "self-assisted flow coating (SAFC)" as a scalable coating method that can apply to hydrophobic (lyophobic) gate dielectric surfaces, which induce edge-on orientation of polymeric organic semiconductors. Using SAFC, we succeeded in fabricating arrays of polymer-based OFETs that show a field-effect mobility comparable to that of a-Si based FETs and the device-to-device variation of less than 3%. Furthermore, we developed alignment layers to induce high in-plane orientational order of the backbone structure of polymeric organic semiconductor. By combined use of a flow coating method and the alignment layer, we succeeded in fabricating highly oriented polymeric organic semiconductor thin films.
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