Red emitting luminescent materials

US9257607B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Peter Josef Schmidt · Aachen, DE
• Walter Mayr · Alsdorf, DE
• Baby-Seriyati Schreinemacher · Eynatten, BE
• Joerg Meyer · Wagenfeld, DE
• Hans-Helmut Bechtel · Roetgen, DE

Key dates

• Filing date: Nov 28, 2011
• Grant date: Feb 9, 2016
• Expiry date: Dec 12, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B20/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a novel red emitting material of (Ba1xyzSrxCayEuz)2Si5a−bAlaN8−a−4bOa+4b having an average particle size distribution d50 of >6 μm, with 0.3≦x≦0.9, 0.01≦y≦0.1, 0.005≦z≦0.04, 0≦a≦0.2 and 0≦b≦0.2.