Tb^(3+),Mn^(2+)作为激活剂的PDP绿色荧光粉的研究

Tb^(3+),Mn^(2+)-Activated Green Phosphors for Plasma Disply Panels

分别介绍了以Mn2+和Tb3+作为激活中心的PDP用硅酸盐体系、铝酸盐体系、硼酸盐体系和磷酸盐等体系绿色荧光粉的研究现状。在以Mn2+作为发光中心的绿粉中,目前研究主要集中在通过调整Mn2+的离子浓度、添加其他杂质,探索使用新的基质材料,或是使用不同的合成技术等方法来改进其余辉时间过长、易时效劣化以及形貌上的不足。在以Tb3+作为激活中心的绿粉中,为了获取在真空紫外激发条件下高的发光效率,则主要围绕寻找在VUV区域内有强吸收的基质和能够有效进行能量传递的稀土敏化剂,以及利用量子剪裁效应来使得荧光粉发光量子效率大于1等方面进行。

The recent research on Tb^3＋ , Mn^2＋ -activated phosphate,silicate,aluminate and borate material as green phosphors for PDP were summarized respectively. For phosphors with Mn^2＋ as luminescent center, the change of Mn^2＋ concentration, introduction of impurity, adoption of new host and different synthesize method were used to improve long duration of afterglow, decay with working time and shape disfigurement. For Tb^3＋ as activated center, attempt at new host with strong absorption in VUV region, sensitizer of suitable effective energy transfer and quantum cutting effect was reported.