| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
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| Outline of Final Research Achievements |
Dye-sensitized solar cells (DSSCs) have been investigated actively as practical photovoltaic cells of the next generation. We focused our attention on the potential of alkoxysilyl dyes as sensitizing dyes for DSSCs based on their high bonding ability to metal-oxide surfaces by forming firm Si-O-metal bonds, and developed a new alkoxysilyl coumarin dye with the help of MO calculations. The cell using the dye exhibited an open-circuit photovoltage over 1.4 V, which is the highest value reported so far for DSSCs. We also found that the cell with the TiO2 electrode co-adsorbed with an alkoxysilyl carbazole dye and a triphenyl amine carboxy dye shows the collaborative sensitization effect, and succeeded to develop the cell showing the light-to-electric conversion efficiency over 14%.
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