Red-emitting luminophore and light source comprising such a luminophore

US8398891B2 · kind B2 · utility

Assignee

• OSRAM GmbH · DE

Inventors

• Daniel Becker · Worms, DE
• Tim Fiedler · Birkenfeld, DE
• Frank Jermann · Königsbrunn, DE
• Bianca Pohl · Birkenfeld, DE
• Martin Zachau · Geltendorf, DE

Key dates

• Filing date: Apr 11, 2008
• Grant date: Mar 19, 2013
• Expiry date: Apr 11, 2028

Classification

• Technology area (CPC —): General

Abstract

A red-emitting phosphor composed of an M-Al—Si—N system, comprising a cation M, wherein M is represented by at least one of the elements Ca or Ba or Sr and, if appropriate, can additionally be combined with at least one further element from the group Mg, Zn, Cd, wherein the phosphor is activated with Eu, which partly replaces M, and wherein the phosphor additionally contains LiF.