2012 Fiscal Year Final Research Report
Light-energy-conversion reaction system constracted by utilizing exciton dynamics.
| Project/Area Number |
22550026
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Nihon University (2011-2012)
National Institute of Advanced Industrial Science and Technology (2010) |
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Principal Investigator |
KATOH Ryuzi 日本大学, 工学部, 教授 (60204509)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 電荷分離反応 / 過渡吸収分光 / 有機ナノ微粒子 / 励起子分裂 / 磁場効果 |
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| Research Abstract |
We have studied exciton dynamics of organic nanomaterials to realize efficient electron injection into semiconductor. We prepared aggregates, such as organic nanocrystals and dye molecule aggregate, on nanocrystalline TiO_2 films. Exciton dynamics of organic crystals, especially exciton fission process were studied by observing magnetic field effect of fluorescence. We found that electron injection from organic nanocrystals to TiO_2 occurs by means of transient absorption spectroscopy. Recombination process between an injected electron and a parent cation was also studied. Temperature dependence measurements were examined to characterize properties of electrons in TiO_2.
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