Publication number: 20050199897
Abstract: Phosphor compositions having the formula (Ba,Sr,Ca)SiO4:Eu and light emitting devices including a semiconductor light source and the above phosphor. Also disclosed are blends of (Ba,Sr,Ca)SiO4:Eu and one or more additional phosphors and light emitting devices incorporating the same. Preferred blends include (Sr,Ba,Ca)2SiO4:Eu and at least one of (Sr,Mg,Ca,Ba,Zn)2P2O7:Eu,Mn; (Ca,Sr,Ba,Mg)5(PO4)3(Cl,F,OH):Eu,Mn; (Sr,Ba,Ca)MgAl10O17:Eu,Mn; and Mg4FGeO6:Mn4+; and one or more garnet phosphors having the general formula (Y,Gd,La,Lu,T,Pr,Sm)3(Al,Ga,In)5O12:Ce.
Type:
Application
Filed:
March 10, 2004
Publication date:
September 15, 2005
Inventors:
Anant Setlur, Alok Srivastava, Holly Comanzo, Dan Hancu, Linda Valyou Briel
Publication number: 20050093442
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-xScxCey)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-bLuaDc)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:
Application
Filed:
October 29, 2003
Publication date:
May 5, 2005
Inventors:
Anant Setlur, Alok Srivastava, Holly Comanzo, Gopi Chandran, Shankar Venugopal, Emil Radkov