Borophosphate phosphor and light source

US8858836B2 · kind B2 · utility

Assignee

• LEUCHTSTOFFWERK BREITUNGEN GMBH · DE

Inventors

• Cheng-Jun Duan · Barchfeld-Immelborn, DE
• Sven Roesler · Eisenach, DE

Key dates

• Filing date: Oct 19, 2011
• Grant date: Oct 14, 2014
• Expiry date: Oct 19, 2031

Classification

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

Abstract

This invention is related to efficient inorganic borophosphate phosphors which can applied in various technical applications such as fluorescent lamps, colored light or white light emitting diodes, and other devices where phosphors are used to convert especially near UV radiation into the visible light. Further, this invention is related to light sources comprising the efficient borophosphate phosphor. The inventive phosphor absorbs radiation in a first wavelength range of the electromagnetic spectrum and emits radiation in a second wavelength range of the electromagnetic spectrum. This phosphor is a borophosphate activated with divalent rare earth metal ions.