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US 2011/0163344 A1Published application
Production of Nitride-Based Phosphors
AssigneeMax-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
InventorsHasan Cakmak, Martin Jansen
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Abstract
This invention relates to a new method for the production of nitride-based phosphors, in particular, of phosphors containing rare earth elements. The phosphors can be used, for example, in light sources, especially in Light Emitting Devices (LEDs).
Claims25
1-16. (canceled)
A method for producing crystalline nitride phosphors comprising the step of
- (i) reacting a halide with ammonia NH3 and a metal source M.
A phosphor having formula (II)
- EmFaGaSigNp
- wherein
- E is Sr, Ca or Ba;
- F is Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc, or Y;
- G is Li, Na, K, Rb or Cs;
- m is 1-2a or 2-2a,
- 0≦a≦1 if m=2-2a,
- 0≦a≦0.5 if m=1-2a,
- 1≦q≦8,
- 1≦p≦10.
7 more elements
Dependencies are inferred from the claim text.