Patent · US Active

Mn-activated hexafluorosilicates for LED applications

US9422471B2 · kind B2 · utility

2Cited by

3References

11Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Volker Weiler · Aachen, DE
Wolfgang Schnick · Gauting, DE
Peter Josef Schmidt · Aachen, DE
Markus Seibald · Kaufering, DE

Key dates

Filing date	Dec 6, 2012
Grant date	Aug 23, 2016
Priority date	—
Expiry date	Dec 6, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/0361
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.