Abstract: The present invention provides-a photoluminescent phosphor coated with a coating of oxide, the phosphor comprising (1) an inorganic phosphor chosen from (a) a metal thiogallate phosphor and (b) a metal sulfide phosphor and (2) a coating that comprises at least one layer having at least one oxides. The coated photoluminescent phosphor of the present invention is more resistant to water-induced degradation than when it is uncoated.

Abstract: The present invention relates to certain metal silicate halide (halosilicate) phosphors, the phosphors with an oxide coating, methods of making the phosphors, and light emitting diode- (LED-) based lighting devices modified with the phosphors.

Abstract: Provided, among other things, is a phosphor according to the formula: A. a phosphor according to the following formula MfSiaAlbBcNdOg:R?,Z ??(A); or B. a phosphor according to the following formula Msn:R?,Z2 ??(B) wherein Msn is a silicon nitride or silicon nitride-oxide of one of: (Mx1M1?x2)(Si5N8):R?,Z2 ??(i) Lsno:R?,Z2 ??(ii) Ln2Si3?zAlzO3+zN4?z:R?,Z2 ??(iii) Lsno is a lanthanide silicon nitride-oxide of one of: Ln(SiO4)N3:R?,Z2 ??(iia) LnSi2O7N2:R?,Z2 ??(iib) LnSiO2N:R?,Z2 ??(iic) Ln2SiO3N4:R?,Z2 ??(iid) Ln2Si8O4N11:R?,Z2 ??(iie); or Mn3Si3?yBO3+yN4?y:R?,Z3 ??(C); or Mf14Sia1Alb1Bc1Nd1-e1-g1Og1De1:R?Z4 ??(D) wherein D is P, Bi, Sb, As or a mixture thereof, and R?, R?, R? and R? are activators, and M, M1, M2, M3 and M4 are cations.

Abstract: Provided among other things is a phosphor of the formula Sr1-x3Cax3Ga2S4:Eu:xGa2S3 ??(I) wherein x is 0 to about 0.2 (or about 0.0001 to about 0.2), wherein x3 is 0.0001 to 1, and wherein a minor part of the europium component is substituted with praseodymium in an efficiency enhancing amount.