| 摘要 |
A blue persistent phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor includes a material having a formula of A3M10-xC1+x(O20-xNx):Eu, RE wherein A may be Ba, Sr, Ca, K, Na or a combination thereof, M may be Al, B, Zn, Co, Ga, Sc or a combination thereof, and C may be Si or Ge or a combination thereof; x is between 0.001 and 5.0; and RE is Dy, Nd, Er, Ho, Tm, Yb, Sm or a combination thereof. Beneficial embodiments use Sr, Si and a combination of Al and B to produce phosphors that are blue in color and have a slower rate of decay. In another embodiment, methods are provided for making persistent phosphors having the formulations above. Other embodiments provide applications for such a phosphor, including uses in toys, emergency equipment, clothing, and instrument panels, among others.
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