| 摘要 |
<p>A phosphor which emits white light upon excitation and is characterized by a long decay time, the phosphor consisting of a host material of calcium silicate having the formula: CaO.xSiO2 where x is in the range from 0.5 to 1, and an activator consisting of dysprosium (Dy) in the ratio of 0.05 to 10 mol % of each 1 mol of the ho t material.</p> |
