| Project/Area Number |
20760140
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | Keio University |
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Principal Investigator |
YOKOMORI Takeshi Keio University, 理工学部, 専任講師 (90453539)
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| Project Period (FY) |
2008 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 燃焼合成 / 気体燃焼 / 蛍光 / ナノ粒子 / 拡散火炎 / TEM / XRD / 減圧 |
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| Research Abstract |
Rare earth doped nanophosphors were prepared by a gas-phase flame synthesis method, in which some vapors or liquid sprays were used as precursors. The prepared nanophosphors were examined by TEM, SEM, XRD, and fluorescence spectroscopy. The size of nanophosphors prepared with vapor precursors depended on partial pressure of vapor precursor, flame temperature and combustible gas pressure. On the other hand, the photoluminescence characteristics of those phosphors only depend on flame temperature, which influenced on the crystalline structure. As for flame synthesis with liquid spray precursors, the size was controlled by spray droplet size and concentration.
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