| 摘要 |
A color-adjustable luminescent powder is provided, the chemical general formula of which is (Y a Gd b Eu c ) 2 O 3 ·xZn (1-m) Al m O, wherein 0 ‰¤ a ‰¤ 0.99, 0 ‰¤ b ‰¤ 0.99, 0.01 ‰¤ c ‰¤ 0.08, provided that a + b + c = 1 and a and b are not 0 simultaneously; x is the molar ratio between Zn (1-m) Al m O and (Y a Gd b Eu c ) 2 O 3 , 0.01 ‰¤ x ‰¤ 0.20, and 0.001 ‰¤ m ‰¤ 0.05. A preparation method of the above luminescent powder is also provided, which comprises the following steps: adding an aqueous alcohol solution containing a complexing agent, and a surfactant to a mixed solution containing needed components to obtain a precursor solution, then aging the precursor solution, undergoing calcination treatment and cooling to obtain the said luminescent powder. |
