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US 8,721,925 B2Granted
Co-doped silicooxynitrides
AssigneeMerck Patent GmbH
InventorsHolger Winkler, Ralf Petry, Tim Vosgroene, Thomas Juestel, Dominik Uhlich, Arturas Katelnikovas
Life of this patent
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Abstract
The invention relates to compounds of the formula (I) (Ca,Sr,Ba)6-X(Si1-yMey)3(O1-zMa2z)6N4:Eux (I), where Me=Th, Ru and/or Os Ma=F and/or Cl, x<0.5, y<1 and z<0.1, and to a process for the preparation of these compounds and use as phosphors and conversion phosphors for the conversion of the blue or near-UV emission from an LED.
Claims27
A 6-3-6-4 alkaline-earth metal silicooxynitride compound with europium doping which additionally comprises co-dopants selected from Th, Ru, Os, F and Cl.
Dependencies are inferred from the claim text.