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US 10,340,426 B2Granted
Phosphor and illumination device utilizing the same
AssigneeEpistar Corporation
InventorsJulius Jr. Liclican Leano, Ru-Shi Liu
Life of this patent
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Abstract
A phosphor is provided, which has a composition of Sr1-xLiAl3N4:Ce3+x, wherein 0<x<0.1. Sr1-xLiAl3N4 is a host material, and Ce3+ is a luminescent center. The phosphor can be collocated with an excitation light source to be applied in an illumination device. On the other hand, the phosphor can be collocated with other phosphors of different colors to be applied in a white light illumination device.
Claims12
A phosphor, having a composition of Sr1-xLiAl3N4:Ce3+x,
- wherein 0<x<0.1, and
- wherein the phosphor has an excitation peak of 515 nm to 535 nm, a first emission peak of 560 nm to 580 nm, and a second emission peak of 610 nm to 630 nm.
Dependencies are inferred from the claim text.