Fabrication of rare-earth doped transparent ceramics for white light sources and construction of evaluation system of optical properties
| Project/Area Number |
19350101
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Kyoto University |
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Principal Investigator |
TANABE Setsuhisa Kyoto University, 大学院・人間・環境学研究科, 教授 (20222119)
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| Co-Investigator(Kenkyū-buntansha) |
NISHI Masayuki 京都大学, 大学院・工学研究科, 助教 (50402962)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2009: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2008: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2007: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
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| Keywords | 希土類 / 蛍光体 / 白色光源 / 透光性セラミックス / 蛍光スペクトル / 積分球 / ガラス / セリウム / ユウロピウム |
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| Research Abstract |
We have carried out fabrication of rare-earth doped transparent ceramics for white light sources and constructed evaluation system of optical properties. Transparent ceramics with compositions of (Y_<0.99-x>Gd_xCe_<0.01>)_3Al_5O_<12> were prepared from nanopowders prepared by co-precipitation methods. Sintered ceramics with 1mm-thickness showed good transparency of 80% at 800nm and showed yellow photoluminescence by blue LED excitation (465nm). The peak wavelength of PLE shifted from 530nm to 560nm with increasing Gd content.
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Report
(4 results)
Research Products
(117 results)
