在空气中采用喷雾热解法合成了稀土铕(Eu)、铽(Tb)及铥(Tm)掺杂的铝酸锌(ZnAl1O4)发光膜,研究了合成条件对其阴极射线发光特性的影响.ZnAl2O4:Tb3、ZnAl2O4:Tm3+及ZnAl2O4:Eu3+膜分别发出主峰位于555 nm的绿光、主峰位于478 nm的蓝光及主峰位于616 nm的红光.上述发光均可在低退火温度(700℃以下)下获得,因此可以使用玻璃作为基底.同时研究了样品发光的色坐标和色纯度,并与标准的红、绿、蓝粉的色品度进行了比较.样品的亮度和效率都随外加电压的增加而增大,没有观察到亮度饱和现象.此外,Eu掺杂的znAl2O4膜在850℃以上、还原气氛中退火后呈现Eu2+的特征发射--宽的蓝发射带.
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