Luminophore, method for producing a luminophore and radiation-emitting component
Assigneeams-OSRAM International GmbH
InventorsMarkus Seibald, Dominik Baumann, Christiane Stoll, Hubert Huppertz, Klaus Wurst
Life of this patent
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Abstract
A luminophore may have the general formula A2EZzXx:RE, where: A is selected from the group of the monovalent elements; E is selected from the group of the tetravalent, pentavalent, or hexavalent elements; Z is selected from the group of the divalent elements; X is selected from the group of the monovalent elements; RE is selected from activator elements; 2+e=2z+x, with the charge number e of the element E; and x+z=5 and z>0. A process is also disclosed that is directed to producing the luminophore and a corresponding radiation-emitting component.
Claims20
A luminophore having a general formula A2EZzXx:RE where:
- A is selected from the group consisting of monovalent elements;
- E is selected from the group consisting of tetravalent, pentavalent, or hexavalent elements;
- Z is selected from the group consisting of divalent elements;
- X is selected from the group consisting of monovalent elements;
- RE comprises an activator element associated with wavelength conversion;
- 2+e=2z+x, wherein e is a charge number of element E;
- and
- x+z=5 and z>0.
A process for producing a luminophore having a general formula A2EZzXx:RE;
- where:
- A is selected from the group consisting of monovalent elements;
- E is selected from the group consisting of tetravalent, pentavalent, or hexavalent elements;
- Z is selected from the group consisting of divalent elements;
- X is selected from the group consisting of monovalent elements;
- RE comprises an activator element associated with wavelength conversion;
- 2+e=2z+x, wherein e is a charge number of element E;
- and
- x+z=5 and z>0;
- wherein the method comprises:
- synthesizing a host material comprising a crystalline structure of A2EZzXx;
- and
- doping the host material with a dopant comprising a salt including RE.
A radiation-emitting component comprising:
- a semiconductor chip configured to emit electromagnetic radiation from a first wavelength range;
- a conversion element including a luminophore having a general formula A2EZzXx:RE that converts electromagnetic radiation of the first wavelength range to electromagnetic radiation of a second wavelength range;
- wherein:
- A is selected from the group consisting of monovalent elements;
- E is selected from the group consisting of tetravalent, pentavalent, or hexavalent elements;
- Z is selected from the group consisting of divalent elements;
- X is selected from the group consisting of monovalent elements;
- RE comprises an activator element associated with wavelength conversion;
- 2+e=2z+x, wherein e is a charge number of element E;
- and
- x+z=5 and z>0.
Dependencies are inferred from the claim text.