【摘要】 等离子体平板显示用绿色发光粉主要有硅酸盐(Zn2S iO4∶Mn2+)、铝酸盐(BaA l12O19∶Mn2+)、磷酸盐(YPO4∶Tb3+)和硼酸盐(YBO3∶Tb3+)4种体系。前两者具有量子效率高、色纯度好等优点,然而抗真空紫外辐照能力差,发光衰减时间长;Tb3+激活的磷酸盐和硼酸盐体系具有适宜的发光寿命,抗真空紫外辐射能力强,然而Tb3+的发射光是黄绿色,色纯度不够好,且发光亮度相对较弱。按一定的混合比率使BaA l12O19∶Mn2+和YPO4∶Tb3+均匀混合,组合这两种体系绿色发光粉各自的优点,优化了等离子体平板显示用绿色发光粉的整体性能。更多还原

【Abstract】 The research on Plasma display panel(PDP) phosphors has gained much attention.The green PDP phosphor is an important component due to its highest brightness in three-color-based phosphors.Existing and developing green-emitting phosphors include Mn-activated silicates and aluminates,and Tb-activated phosphates and borates systems.Mn-activated silicates and aluminates have high quantum efficiency and excellent color coordinate,but low stability to vacuum ultraviolet(VUV) radiation and long decay time.Tb-activated phosphates and borates have suitable decay time and high stability to VUV radiation,but low brightness and color purity.This work investigates the luminescent performance of single BaAl12O19∶Mn2+,YPO4∶Tb3+,and especially their blends.The result indicates that the blends of BaAl12O19∶Mn2+ and YPO4∶Tb3+ can effectively combine their respective advantages to improve the overall luminescent performance of green-emitting phosphors for PDP application.更多还原