| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
Factors associated with the open-circuit photovoltage (Voc) of dye-sensitized solar cells (DSSCs) were computationally investigated using density functional theory (DFT). For the n-type (p-type) DSSCs, intermolecular interactions of dye with electron acceptor (donor) such as iodine molecule (anion radical) can accelerate the recombination process by changing the concentration of the electron acceptor (donor) near the n-type (p-type) semiconductor surface such as TiO2 (NiO). The closer the binding site of the acceptor (donor) to the semiconductor surface, the faster will be the recombination of injected electrons (holes) in the semiconductor with the acceptor (donor) in the electrolyte, decreasing Voc. Based on the computational findings, we showed a new molecular design of dye for better Voc in DSSCs.
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