Luminescent composition
AssigneeSeaborough Materials IP B.V.
InventorsMichael Krames, Marie Anne Van De Haar
Life of this patent
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Abstract
The invention relates to lighting emitting devices and systems comprising a luminescent composition, said luminescent composition comprising: (i) a first emitting material, said first emitting material having a host lattice doped with EU3+ ions; (ii) a second emitting material, said second emitting material having a host lattice doped with Tb3+ ions; and (iii) sensitizer material, which sensitizer material is excitable in the violet-to-blue (400 to 480 nm) wavelength range and has an emission spectrum which overlaps at least partly with one or more excitation bands of the first emitting material and with which overlaps at least partly with one or more excitation bands of the second emitting material.
Claims18
Luminescent A luminescent composition, said luminescent composition comprising:
- (i) a first emitting material, said first emitting material having a host lattice doped with Eu3+ ions;
- (ii) a second emitting material, said second emitting material having a host lattice doped with Tb3+ ions;
- and
- (iii) a sensitizer material having a host lattice with a garnet structure, doped with Ce3+ ions at a doping level of 0.05-5%, which sensitizer material is excitable in the violet-to-blue wavelength range and has an emission spectrum which overlaps at least partly with one or more excitation bands of the first emitting material and which overlaps at least partly with one or more excitation bands of the second emitting material.
Dependencies are inferred from the claim text.