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US 8,012,372 B2Granted
Borate phosphor and white light illumination device utilizing the same
AssigneeIndustrial Technology Research Institute
InventorsWei-Jen Liu, Yao-Tsung Yeh, Shyue-Ming Jang, Chien-Yueh Tung, Chih-Pin Wu, Teng-Ming Chen
Life of this patent
Estimating the term…
Abstract
The invention provides borate phosphors composed of Ma(Mb)1-xBO3:(Mc)x, wherein Ma is Li, Na, K, Rb, Cs, or combinations thereof, Mb is Mg, Ca, Sr, Ba, Zn or combinations thereof, Mc is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu, or combinations thereof, and 0≦x≦0.3. 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.
Claims19
A borate phosphor, having a formula:
- LiCa1-xBO3:Cex, LiSr1-xBO3:Cex, LiBa1-xBO3:Cex, NaCa1-xBO3:Cex, NaSr1-xBO3:Cex, NaBa1-xBO3:Cex, NaCa1-xBO3:Eux, NaSr1-xBO3:Eux, NaBa1-xBO3:Eux, KCa1-xBO3:Cex, or KSr1-xBO3:Cex, and
- 0<x≦0.3.
Dependencies are inferred from the claim text.