| 摘要 |
The invention provides a white light illumination device including an ultraviolet excitation light source and an ultraviolet excitable aluminosilicate phosphor. The ultraviolet excitable aluminosilicate phosphor has a formula as (M<SUB>1-x</SUB>,Re<SUB>x</SUB>)<SUB>a</SUB>Al<SUB>b</SUB>Si<SUB>c</SUB>O<SUB>d</SUB>:D, wherein M is Mg, Ca, Sr, Ba or combination thereof. In addition, Re is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu or combination thereof, while 0<a,b,c,d, 2a+3b+4c=2d, and 0<=x<=a. Furthermore, D is F, Cl, I, Br, OH, S or combinations thereof. The aluminosilicate phosphor emits blue or blue-green light under the excitation of ultraviolet light, and the aluminosilicate phosphor may further collocate with different color phosphors to provide a white light illumination device.
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