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Oxide ceramic fluorescent material having rare earth diffused therein
An oxide ceramic fluorescent material is provided comprising a polycrystalline ceramic sintered body of Y3Al5O12, Lu3Al5O12, (Y,Lu)3Al5O12, (Y,Gd)3Al5O12, or Al2O3 in which a rare earth element selected from Ce, Eu and Tb has been diffused from its surface as fluorescent activator. The concentration of the rare earth element is 1 wt % at a depth of 50-600 μm as measured from the sintered body surface and at least 1 wt % at any position nearer to the sintered body surface.
Oxide ceramic fluorescent material having rare earth diffused therein
An oxide ceramic fluorescent material is provided comprising a polycrystalline ceramic sintered body of Y3Al5O12, Lu3Al5O12, (Y,Lu)3Al5O12, (Y,Gd)3Al5O12, or Al2O3 in which a rare earth element selected from Ce, Eu and Tb has been diffused from its surface as fluorescent activator. The concentration of the rare earth element is 1 wt % at a depth of 50-600 μm as measured from the sintered body surface and at least 1 wt % at any position nearer to the sintered body surface.
Oxide ceramic fluorescent material having rare earth diffused therein
TSUMORI TOSHIHIRO (author) / WATAYA KAZUHIRO (author)
2015-08-25
Patent
Electronic Resource
English
| European Patent Office | 2024
Ceramic having rare earth elements and preparation method thereof
| European Patent Office | 2015