Improved performances of dye-sensitized solar cells by control of adsorption and aggregation of photosensitizing dyes
| Project/Area Number |
25288085
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial 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 |
HARIMA YUTAKA 広島大学, 工学(系)研究科(研究院), 教授 (20156524)
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| Co-Investigator(Kenkyū-buntansha) |
IMAE ICHIRO 広島大学, 大学院工学研究院, 准教授 (90293399)
KOMAGUCHI KENJI 広島大学, 大学院工学研究院, 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 |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 色素増感太陽電池 / 凝集緩和 / PEDOT / 最隣接分子間距離 / 共吸着 / 有機色素 / Brønsted酸点 / Lewis酸点 / TEMPOラジカル / 吸着 / 共吸着剤 / DSSC / solar cells / organic dyes / adsorption / 太陽電池 / 色素増感 / スピンプローブ / ESR / 高効率色素増感太陽電池 |
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| Outline of Final Research Achievements |
We have successfully clarified influences of adsorption features of organic dyes on the photovoltaic efficiencies by studying relations of photovoltaic parameters, loadings of dyes, and average intermolecular distances of the spin-probe dyes having TEMPO at the end of the dye molecules developed in this study. In addition, new type of organic dyes having a pyridyl group were designed and synthesized, and these dyes were found to adsorb weakly on Lewis acid sites of titania. Dye-sensitized solar cells based on these pyridyl-dyes exhibited injection efficiencies of electrons from LUMO levels of the dyes to the conduction band no lower than those of conventional carboxyl-dyes. This finding provided a new guiding principle for designing efficient organic dyes for the dye-sensitized solar cells and this pioneering study has been cited by many other researchers.
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Report
(4 results)
Research Products
(37 results)
