Phosphor compositions and lighting apparatus thereof
AssigneeGeneral Electric Company
InventorsAlok Mani Srivastava, William Winder Beers, William Erwin Cohen, Holly Ann Comanzo
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Abstract
A green emitting phosphor composition is disclosed. A phosphor composition of formula Ca1-xEuxAlB3O7, where 0<x<0.5 is formed from combining calcium carbonate, boron oxide, aluminum oxide, and europium oxide; and then firing the combination. A lighting apparatus including the phosphor composition is also provided. The phosphor composition may be combined with an additional phosphor to generate white light.
Claims24
A phosphor composition derived from combining about 36 parts by weight of calcium carbonate, about 40 parts by weight of boron oxide, about 20 parts by weight of aluminum oxide, and about 3 parts by weight of europium oxide;
- and firing the combination.
A phosphor composition of formula Ca1-xEuxAlB3O7, where 0<x<0.5 formed by:
- combining calcium carbonate, boron oxide, aluminum oxide and europium oxide;
- and
- firing the combination.
A lighting apparatus comprising a light source and a phosphor material radiationally coupled to the light source, the phosphor material comprising a phosphor composition derived from combining about 36 parts by weight of calcium carbonate, about 40 parts by weight of boron oxide, about 20 parts by weight of aluminum oxide, and about 3 parts by weight of europium oxide and firing the combination.
Dependencies are inferred from the claim text.