Patent Number: 8,721,925

Title: Co-doped silicooxynitrides

Abstract: The invention relates to compounds of the formula (I) (Ca,Sr,Ba).sub.6-X(Si.sub.1-yMe.sub.y).sub.3(O.sub.1-zMa.sub.2z).sub.6N.s- ub.4:Eu.sub.x (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.

Inventors: Winkler; Holger (Darmstadt, DE), Petry; Ralf (Griesheim, DE), Vosgroene; Tim (Ober-Ramstadt, DE), Juestel; Thomas (Witten, DE), Uhlich; Dominik (Steinfurt, DE), Katelnikovas; Arturas (Steinfurt, DE)

Assignee: MERCK PATENT GmbH

International Classification: C01B 21/082 (20060101); C09K 11/08 (20060101); C09K 11/02 (20060101); C09K 11/77 (20060101)

Expiration Date: 5/13/12018