Red phosphor and white light illumination device utilizing the same
First Claim
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1. A red phosphor, comprising:
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M(Eu1-x-yLaxBiy)4Si3O13;
wherein M is Ca, Sr, Ba, or combinations thereof;
0<
x<
1; and
0<
y<
1.
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Abstract
The invention provides a red phosphor composed of M(Eu1-x-yLaxBiy)4Si3O13, wherein M is Ca, Sr, Ba, or combinations thereof, 0<x<1, and 0<y<1. Under excitation of blue light or ultraviolet light, the red phosphor emits red light having a major emission peak of about 613 nm. The red phosphor of the invention may be collocated with green and blue phosphors to provide a white light illumination device.
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Citations
13 Claims
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1. A red phosphor, comprising:
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M(Eu1-x-yLaxBiy)4Si3O13;wherein M is Ca, Sr, Ba, or combinations thereof; 0<
x<
1; and0<
y<
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification