Phosphors
AssigneeMerck Patent GmbH
InventorsHolger WINKLER, Ralf PETRY, Tim VOSGROENE, Peter BARNEKOW, Thomas JUESTEL, Claudia SUESSEMILCH
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Abstract
The present invention relates to garnet phosphors, to a process for the preparation thereof and to the use thereof as conversion phosphors. The present invention also relates to an emission-converting material comprising at least the conversion phosphor according to the invention, and to the use thereof in light sources, in particular pc-LEDs (phosphor converted light emitting devices). The present invention furthermore relates to light sources, in particular pc-LEDs, and to lighting units which comprise a primary light source and the emission-converting material according to the invention.
Claims16
Compound of the formula (1),
- M3-xCex(Al5-y-z-wGazScw)MnyO12-yHaly (1)
- where the following applies to the symbols and indices used:
- M is selected from the group consisting of Y, Gd, Lu and Tb or mixtures of two or more of these metals;
- Hal is selected from the group consisting of F, Cl, Br and I or mixtures of two or more of these elements;
- 0≦x≦0.3;
- 0<y≦0.2;
- 0≦z≦1.0;
- 0≦w≦1.0.
Dependencies are inferred from the claim text.