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US 11,532,770 B2Granted
Mining unexplored chemistries for phosphors for high-color-quality whitelight-emitting diodes
AssigneeThe Regents of the University of California
InventorsShyue Ping Ong, Jungmin Ha, Zhenbin Wang, Joanna McKittrick, Won Bin Im, Yoon Hwa Kim
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Abstract
A light emitting diode (LED) assembly includes an LED light source having a first light output with a characteristic spectrum and at least one phosphor through which the first light output passes. The phosphor includes the quaternary compound M-Li—Al—O, where M is Ba, Sr, or Ca, activated by Eu2+ or Ce3+.
Claims6
A light emitting diode (LED) assembly, comprising:
- an LED light source having a first light output with a characteristic spectrum;
- and
- at least one phosphor through which the first light output passes, the at least one phosphor including a quaternary compound M2LiAlO4, where M is Ba, Sr, or Ca, activated by Eu2+ or Ce3+.
A light emitting diode (LED) assembly, comprising:
- an LED light source having a first light output with a characteristic spectrum;
- and
- at least one phosphor through which the first light output passes, the at least one phosphor including a quaternary compound Sr—Li—Al—O activated with Eu2+, wherein the at least one phosphor includes a plurality of phosphors, a first phosphor including Sr2LiAlO4 activated by Eu2+ and a second phosphor including Sr2LiAlO4 activated by Ce3+.
A light emitting diode (LED) assembly, comprising:
- an LED light source having a first light output with a characteristic spectrum;
- and
- at least one phosphor through which the first light output passes, the at least one phosphor including a quaternary compound MLiAlO3, where M is Ba, Sr, or Ca, activated by Eu2+ or Ce3+.
Dependencies are inferred from the claim text.