| 摘要 |
A phosphor can be excited by UV, purple or blue light LED, its production and the light emitting devices. The general formula of the phosphor is LnaMb(O,F)12:(R3+, M'2+)x, wherein, Ln is at least one metal element selected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Sm, 2.6<=a<=3.4; M is at least one element selected from a group consisting of B, Al and Ga, 4.5<=b<=5.5; R is at least one metal element selected from a group consisting of Ce and Tb; M' is at least one metal element selected from a group consisting of Ca, Sr, Ba, Mn and Zn, 0.001<=x<=0.4. The phosphor possesses broad emitting range, high efficiency, better uniformity and stability. A light emitting device can be obtained by incorporating this phosphor into a UV, purple or blue light emitting device.
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