| Project/Area Number |
25810136
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Kyoto University |
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Principal Investigator |
UEDA Jumpei 京都大学, 地球環境学堂, 助教 (90633181)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 長残光蛍光体 / 蓄光材料 / 電子移動 / 希土類イオン / 熱ルミネッセンス / 電子トラップ / 光誘起電子移動 / 光電導度 / 蛍光体 |
|---|
| Outline of Final Research Achievements |
Recently, white LEDs have started to be widely used as a indoor illumination due to the high luminous efficacy, high energy saving and so on. In general, white LEDs are composed of blue LEDs and yellow phosphors, so that the white LEDs do not include UV and violet light. Therefore, persistent phosphors used as emergency signs in indoor environment should be charged by blue light. In this study, we successfully developed new blue light chargeable persistent ceramic phosphor, which has a comparable persistent property compared with well known SrAl2O4:Eu-Dy persistent phosphors.
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