Patent number: 7094362
Abstract: Phosphor compositions having the formulas (Tb1?x?y?z?wYxGdyLuzCew)3MrAls?rO12+?, where M is selected from Sc, In, Ga, Zn, or Mg, and where 0<w?0.3, 0?x<1, 0?y?0.4, 0?z<1, 0?r?4.5, 4.5?s?6, and ?1.5???1.5; (RE1?x?yScxCey)2A3?pBpSiz?qGeqO12+?, where RE is selected from a lanthanide ion or Y3+, A is selected from Mg, Ca, Sr, or Ba, B is selected from Mg and Zn, and where 0?p?3, 0?q?3, 2.5?z?3.5, 0?x?1, 0?y?0.3, ?1.5???1.5; and (Ca1?x?y?zSrxBayCez)3(Sc1?a?cLuaDc)2Sin?wGewO12+?, where D is either Mg or Zn, 0?x<1, 0?y<1, 0<z?0.3, 0?a<1, 0?c?1, 0?w?3, 2.5?n?3.5, and ?1.5???1.5. Also disclosed are light emitting devices including a light source and at least one of the above phosphor compositions.
Type:
Grant
Filed:
October 29, 2003
Date of Patent:
August 22, 2006
Assignee:
General Electric Company
Inventors:
Anant Achyut Setlur, Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran, Shankar Venugopal, Emil Radkov