Borate phosphor and white light illumination device utilizing the same
AssigneeIndustrial Technology Research Institute
InventorsWei-Jen Liu, Yi-Chen Chiu, Chien-Yueh Tung, Yao-Tsung Yeh, Shyue-Ming Jang, Teng-Ming Chen
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Abstract
The invention provides borate phosphors composed of Ca1-xAlBO4:Mx, wherein M is Pr3+, Nd3+, Eu3+, Eu2+, Gd3+, Tb3+, Ce3+, Dy3+, Yb2+, Er3+, Sc3+, Mn2+, Zn2+, or combinations thereof, and 0≦x≦0.3. The invention also provides borate phosphors composed of Zn1-x-yB2O4:Eu3+x, Bi3+y, wherein 0≦x≦0.6 and 0≦y≦0.6. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.
Claims11
A white light illumination device, comprising the borate phosphor having a formula:
- Ca1-xAlBO4:Mx,
- wherein M is Pr3+, Nd3+, Eu3+, Eu2+, Gd3+, Tb3+, Ce3+, Dy3+, Yb2+, Er3+, Sc3+, Mn2+, Zn2+, or combinations thereof;
- and
- 0≦x≦0.3;
- and
- an excitation light source, wherein the excitation light source emits 200-400 nm UV or 400-470 nm blue light.
Dependencies are inferred from the claim text.