| 摘要 |
A composition comprising an inorganic core and an aluminate shell is described. The aluminate can have the formula (1):;(CeaTbb)Mg1+xAl11+y019+x+y (1),;where a, b, x and y comply with the relations a+b=1−0.2˜x˜+0.2 and −0.2˜y˜+0.2, wherein the shell uniformly covers the inorganic core over a thickness of no less than 300 nm. A phosphor is also described that can be obtained by calcinating the composition at a temperature of at least 1200° C. |
