| Budget Amount *help |
¥26,650,000 (Direct Cost: ¥20,500,000、Indirect Cost: ¥6,150,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
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| Outline of Final Research Achievements |
There have been a few reports on application of bifulorenylidene (BF) and its derivatives to organic photovoltaic cells (OPVs) as an n-type material. We synthesized 2,7'- or 3,6'-substituted BF compounds. The effects of the substitution position in the compounds on photophysical and OPV properties were investigated. The thermal properties were investigated by DSC and TGA, and the electrochemical properties were determined by UV-vis and photon electron yield spectroscopy. Solution processed bulk heterojunction OPV devices with a structure of [ITO/ PEDOT:PSS (30 nm)/ active layer/ Ca (10 nm)/ Al (100 nm)] were fabricated. The active layers were composed of [BF compounds: PC70BM] where BF compounds were used as p-type material, or [P3HT: BF compounds] where BF compounds were used as n-type materials. The device with the BF compounds used as a p-type material showed better performance than the device with the BF as an n-type material.
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