Method of producing aluminate fluorescent substance, a fluorescent substance and a diode containing a fluorescent substance
AssigneeSumitomo Chemical Company, Limited
InventorsKeiji Ono, Susumu Miyazaki
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Abstract
A method of producing an aluminate fluorescent substance, a fluorescent substance and a device containing a fluorescent substance. The method includes the steps of mixing an α-alumina powder having an average primary particle size of from about 0.05 μm to less than 0.3 μm with a metal salt, and calcining the resulting mixture.
Claims19
A method of producing an aluminate fluorescent substance, comprising the steps of mixing an α-alumina powder with a metal salt, the α-alumina powder having an average primary particle size of from about 0.05 μm to less than 0.3 μm, and calcining the resulting mixture.
A fluorescent substance for vacuum ultraviolet ray-excited light emitting device comprises an aluminate fluorescent substance comprising a calcining mixture of an α-alumina powder having an average primary particle size of from about 0.05 μm to less than 0.3 μm with a metal salt, wherein said aluminate fluorescent substance has a primary particle size of from about 0.05 μm to less than about 0.3 μm in an amount of about 80 wt % or more.
A vacuum ultraviolet ray-excited, light emitting device comprising a fluorescent substance for a vacuum ultraviolet ray-excited light emitting device which comprises an aluminate fluorescent substance comprising calcining mixture of an α-alumina powder having an average primary particle size of from about 0.05 μm to less than 0.3 μm with a metal salt, wherein said aluminate fluorescent substance has a primary particle size of from about 0.05 μm to less than about 0.3 μm in an amount of about 80 wt % or more.
Dependencies are inferred from the claim text.