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US 9,045,687 B2Granted
Carbodiimide phosphors
AssigneeMerck Patent GmbH
InventorsHolger Winkler, Andreas Benker, Ralf Petry, Tim Vosgroene
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Abstract
The invention relates to carbodiimide compounds of the general formula (I) EA2-ySi(CN2)4-xOx:Euy where EA stands for one or more elements selected from Mg, Ca, Sr, Ba or Zn and x stands for a value from the range from 0 to 3.9 and Y stands for a value from the range from 0.01 to 0.4, and a process for the preparation of these phosphors and the use thereof as conversion phosphors or in lamps.
Claims21
A compound of formula I
- EA2-ySi(CN2)4-xOx:Euy (I)
- where
- EA stands for one or more elements selected from Mg, Ca, Sr, Ba, and Zn,
- x stands for a value from the range from 0 to 3.9, and
- y stands for a value from the range from 0.01 to 0.4.
2 more elements
Dependencies are inferred from the claim text.