近年来在荧光灯领域中出现了整套组装的灯泡形,开发的重点正移向小型 U 形管,对于这些灯所用的三基色荧光粉,目的在于试图提高发光的效率和解释劣化的机理。此外,关于 CRT 方面,显示管用的和投影 TV的投影管用的荧光粉正成为兴趣的中心。三基色荧光灯的红色成分 Y_2O_3:Eu,各批粉间亮度的波动达10%以上,其原因据认为有三种:(1)~5D_0能级无幅射的失活;(2)由于 Eu~(3+)离子选择占据 C_(3i)位优先于 C_2位,使从 C_2位上的 Eu~(3+)发射611nm减少了;(3)Eu~(3+)居于畸变格位或者在Y_2O_3以外的副相中。但无论哪个模型均不 In recent years there has been a complete assembly of bulb shapes in the field of fluorescent lamps and the focus of development has shifted toward small U-tubes. The trichromatic phosphors used for these lamps are intended to attempt to increase the efficiency of luminescence and explain the mechanism of degradation. In addition, with regard to the CRT, phosphors for display and projection TV projectors are becoming the center of interest. The red component Y_2O_3: Eu of the trichromatic fluorescent lamp has a fluctuation of more than 10% of the brightness among the batches of powder. The reason for the fluctuation is that there are three kinds of reasons: (1) ~ 5D_0 level deactivation without radiation; (2) 3 + ions occupy C_ (3i) sites with priority over C_2 sites and reduce Eu_ (3+) emissions from C_2 sites at 611nm. (3) Eu ~ (3+) resides in the distorted sites or is outside Y_2O_3 In the deputy phase. But no matter which model is not