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US 11,162,026 B2Granted
Converter system
AssigneeSeaborough IP I B.V.
InventorsMichael Krames, Marie Anne Van de Haar
Life of this patent
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Abstract
The invention relates to a converter system, for instance for a light emitting device, comprising: —a first material, which comprises, preferably essentially consists of an emitting material, emitting a color of interest, and is essentially free of sensitizer material, —a second sensitizer material, which is essentially free of the first material and absorbs light (is excitable) in the wavelength range of interest and its emission spectrum overlaps at least partly with one or more excitation bands of the first material.
Claims13
A converter system, for instance for a light emitting device, comprising:
- a first material, which comprises an emitting material, emitting a color of interest, and is essentially free of a sensitizer material;
- and
- a second sensitizer material, which is essentially free of the first material and absorbs light (is excitable) in the wavelength range of interest and its emission spectrum overlaps at least partly with one or more excitation bands of the first material,
- wherein the emitting material of the first material comprises one or more of the ions of the group comprising Eu3+, Tb3+ and Mn4+, and
- wherein the second sensitizer material comprises one or more ions selected out of the group Eu2+, Pb2+, Bi3+ and Ce3+, and
- wherein the converter system is obtainable by a process comprising dissolving the first material and the second sensitizer material in a solvent, and evaporating the solvent, wherein the process involves removing ligands from the first material and/or the second sensitizer material prior to the dissolving.
3 more elements
Dependencies are inferred from the claim text.