Patent ID: 8801968

Claim:
Surface-modified phosphor particles based on luminescent particles comprising: at least one luminescent compound selected from: (Y,Gd,Lu,Sc,Sm,Tb) 3 (Al,Ga) 5 O 12 :Ce with Pr; (Y,Gd,Lu,Sc,Sm,Tb) 3 (Al,Ga) 5 O 12 :Ce without Pr; YSiO 2 N:Ce; Y 2 Si 3 O 3 N 4 :Ce; Gd 2 Si 3 O 3 N 4 :Ce; BaMgAl 10 O 17 :Eu with Mn; BaMgAl 10 O 17 :Eu without Mn; Sr 4 Al 14 O 25 :Eu; (Ca,Sr,Ba)Si 2 N 2 O 2 :Eu; SrSiAl 2 O 3 N 2 :Eu; (Ca,Sr,Ba) 2 Si 5 N 8 :Eu; (Ca,Sr,Ba)SiN 2 :Eu; CaAlSiN 3 :Eu; molybdates; tungstates; vanadates; group III nitrides; and group III oxides, in each case individually or mixtures thereof with one or more activator ions, at least one inorganic layer comprising oxides/hydroxides of Si, Al, Zr, Zn, Ti and/or mixtures thereof, and an organic coating of organosilanes or polyorganosiloxanes and/or mixtures thereof are applied to the luminescent particles, wherein said at least one inorganic layer is between said at least one luminescent compound and said organic coating, wherein the amount of the organic coating is between 0.02 and 5% by weight based on the surface-coated phosphor particles.