阴极射线荧光粉经高激发密度灼伤后发光效率的研究

RESEARCH ON LUMINOSITY OF CATHODE FLUORESCENCE POWDER WITH HIGH-EXCITAION RAY

近年来发光材料在应用中所处激发密度越来越高 ,在使用中往往造成荧光粉的饱和和灼伤。本文研究高清晰投影电视管用绿色荧光粉ZnSiO4 :Mn和YAGG :Tb在高激发密度阴极射线束灼伤后影响发光效率的主要环节 ,发现ZnSiO4 :Mn的表面深层处材料的吸收和传递机制受到损伤 ,而YAGG :Tb的发光中心受到损伤 ,出现饱和。

The key links which affect the luminosity of green fluorescnce powder ZnSiO 4:Mn and YAGG:Tb used in high definition projection television after burned by high-excitation density cathode ray beam are researched in this paper. It is found that the absorptivity and transmmission mechanism of the material at the surfacedeep level of ZnSiO 4:Mn and the luminous center of YAGG:Tb are damaged, with the result of saturation.