| Budget Amount *help |
¥44,720,000 (Direct Cost: ¥34,400,000、Indirect Cost: ¥10,320,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2017: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2016: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
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| Outline of Final Research Achievements |
Phosphors are utilized such as lighting and display, increased use of white LED is remarkable in recent years. To applications such as automobile headlights, the development of phosphors using laser diode excitation source has been required. In order to develop new phosphors that can meet this requirement, we searched for materials based on crystal site engineering and conducted structural analysis. We found new phosphors doped with europium and found many useful findings on the doped crystalline sites. We also searched materials based on crystal site engineering for up-conversion phosphors that emit visible light by infrared excitation. We have discovered new bright up-conversion phosphors, in which complex oxides having layered structure emits bright light.
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