Luminescent silicate luminescent screens and lamps...

Details Luminescent silicate luminescent screens and lamps... Luminescent silicate luminescent screens and lamps...

C - Chemistry, Metallurgy

01

B

31/123, 23/190

C01B 33/24 (2006.01) C09K 11/77 (2006.01)

Patent

CA 1155635

PHN 9506 13 30-5-1980 ABSTRACT: "Luminescent silicate, luminescent screens and lamps com- prising such a luminescent silicate." A luminescent silicate having a composition de- fined by the formula Me3-p-q Pbp Mnq Ln2-r-x-y-z Gdr Cex Tby Dyz Si6 O18, wherein Me represents Sr and/or Ca and Ln represents Y and/or La, wherein, if q=r=x=y=z=0, it holds that 0.01 ? p ? 0.50 wherein, if p=q=y=z=0, it holds that 0.01 ? x ? 0.80 and 0 ? r ? 2-x wherein, if q=x=y=z=0, it holds that 0.01 ? p ? 0.50 and 0.05 ? r ? 2.0; and wherein otherwise it holds that 0.01 ? p ? 0.50 0.05 ? r ? 2-x-y-z 0 ? q ? 0.30 0 ? x ? 0.80 0 ? y ? 1.0 0 ? z ? 0.10 0.005 ? q+x+y+z.

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