Evaluation of intermolecular distances of dyes for improving photovoltaic performances in dye-sensitized solar cells
| Project/Area Number |
25410202
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Energy-related chemistry
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| Research Institution | Hiroshima University |
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Principal Investigator |
Komaguchi Kenji 広島大学, 工学(系)研究科(研究院), 准教授 (80291483)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 色素増感太陽電池 / 色素凝集 / スピンプローブ色素 / 電子スピン共鳴法 / 最隣接平均分子間距離 / スピンプローブ有機色素 / 凝集 |
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| Outline of Final Research Achievements |
We synthesized novel bifunctionalised organic dyes that can work as a photosensitizer for dye-sensitized solar cells (DSSCs) and an electron spin probe. Average nearest-neighbor intermolecular distances of spin-probe molecules adsorbed on TiO2 were determined by an ESR analysis to clarify their aggregation state in the presence or absence of a coadsorbate, chenodeoxycholic acid (CDCA). The dyes adsorbed on the TiO2 surface to form aggregations shaped islands without CDCA, and adsorbed in random dispersion with CDCA. Moreover, the photovoltaic measurements were conducted for DSSCs based on the spin-probe dyes. We found a significant correlation between the photovoltaic performances and the intermolecular distances. The findings are particularly helpful to understand the influence of dye aggregations and the CDCA coadsorption on the photoelectric conversion properties of DSSCs.
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Report
(4 results)
Research Products
(14 results)
