Red line emitting complex fluoride phosphors activated with Mn4+

US7847309B2 · kind B2 · utility

Assignee

• GE LIGHTING SOLUTIONS LLC · US

Inventors

• Emil Radkov · Kyle, US
• Anant Achyut Setlur · Niskayuna, US
• Alok Mani Srivastava · San Francisco, US
• Ljudmil Slavchev Grigorov · Sofia, BG

Key dates

• Filing date: Jul 16, 2008
• Grant date: Dec 7, 2010
• Expiry date: May 26, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/181
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

New phosphor materials including a complex fluoride phosphor activated with Mn4+ which may include at least one of (A) A2[MF7]:Mn4+, wherein A=Li, Na, K, Rb, Cs, NH4, or a combination thereof, and M=Nb, Ta or a combination thereof; and (B) A3[XF6]:Mn4+, wherein A=Li, Na, K, Rb, Cs, NH4, or a combination thereof, and X=Sc, Y, La, a lanthanide, Bi, or a combination thereof.