| Budget Amount *help |
¥24,700,000 (Direct Cost: ¥19,000,000、Indirect Cost: ¥5,700,000)
Fiscal Year 2019: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2016: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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| Outline of Final Research Achievements |
Nanofilling technology using supercritical fluid was investigated for the formation of three-dimensional organic photovoltaics. Supercritical fluid can drastically change the solubility of materials by tuning the temperature and pressure. In this study, the temperature dependence of the solubility of semiconductor molecules in supercritical fluid was utilized to allow the deposition. The formation of ultra-thin continuous films, which is difficult to achieve with conventional techniques, was successfully achieved using tetracene as a model substance. The obtained films had high crystallinity. It was possible to form the tetracene thin film onto microtrenches with an aspect ratio of 10, but it was not possible to fill the film. Further study is necessary.
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