Co-doped silicooxynitrides

US8721925B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Holger Winkler · Darmstadt, DE
• Ralf Petry · Griesheim, DE
• Tim Vosgroene · Ober-Ramstadt, DE
• Thomas Juestel · Aachen, DE
• Dominik Uhlich · Steinfurt, DE
• Arturas Katelnikovas · Steinfurt, DE

Key dates

• Filing date: Jun 17, 2010
• Grant date: May 13, 2014
• Expiry date: Dec 26, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/5436
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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.