| Budget Amount *help |
¥47,710,000 (Direct Cost: ¥36,700,000、Indirect Cost: ¥11,010,000)
Fiscal Year 2015: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2014: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2013: ¥31,330,000 (Direct Cost: ¥24,100,000、Indirect Cost: ¥7,230,000)
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| Outline of Final Research Achievements |
In this study, we carried out the following fundamental researches on organic devices. Cyclic- and star-shaped polymers with short-wavelength absorptions were successfully synthesized. Power conversion efficiencies (PCEs) of organic solar cells (OSCs) using cyclic-shaped polymers were higher than those using conventional linear polymers. On the basis of solid-state NMR analysis, short-wavelength absorption type OSCs with high PCEs were successfully fabricated using a new polymer, especially without using halogenated solvents. These results will contribute greatly for the developments of environmentally-friendly tandem-type OSCs. In addition, we carried out device fabrications by a slot-die coater, whose PCEs were almost the same or slightly higher than those by the conventional spin-coating method. We also carried out studies on device degradation analysis, multiscale charge transport calculations, and organic light-emitting diodes. The progress of this study is beyond the expected.
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