Luminescent material
AssigneeSeoul Semiconductor Co., Ltd.
InventorsGundula ROTH, Walter TEWS, Chung-Hoon LEE
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Abstract
A luminescent material is disclosed. The luminescent material may include a first compound having a host lattice comprising first ions and oxygen. A first portion of the first ions may be substituted by copper ions. In one embodiment, the host lattice may include silicon, the copper ions may be divalent copper ions and the first compound may have an Olivin crystal structure, a β-K2SO4 crystal structure, a trigonal Glaserite (K3Na(SO4)2) or monoclinic Merwinite crystal structure, a tetragonal Ackermanite crystal structure, a tetragonal crystal structure or an orthorhombic crystal structure. In another embodiment, the copper ions do not act as luminescent ions upon excitation with the ultraviolet or visible light.
Claims13
A luminescent material for a light emitting diode (LED), comprising:
- a first compound including a host lattice and a luminescent ion within the host lattice,
- wherein the host lattice comprises first ions and oxygen,
- wherein a first portion of the first ions is substituted by divalent copper ions,
- wherein the first compound emits light upon excitation with ultraviolet light or visible light emitted by the LED, and
- wherein the first compound has an Olivin crystal structure, a β-K2SO4 crystal structure, a trigonal Glaserite (K3Na(SO4)2) or monoclinic Merwinite crystal structure, a tetragonal Ackermanite crystal structure, a tetragonal crystal structure or an orthorhombic crystal structure.
A luminescent material for a light emitting diode (LED), comprising:
- a compound including a host lattice and a luminescent ion within the host lattice,
- wherein the host lattice comprises first ions and oxygen,
- wherein a first portion of the first ions is substituted by copper ions,
- wherein the compound emits light upon excitation with ultraviolet light or visible light emitted by the LED, and
- wherein the copper ions do act as luminescent ions upon excitation with the ultraviolet light or visible light.
Dependencies are inferred from the claim text.