1.引言随着高清晰度大屏幕显示的发展,CRT荧光屏上的输入负载也就越来越大,这样就容易导致荧光粉的老化(特别是亮度饱和)、可靠性降低。本报告以易于产生亮度饱和的 Y_2O_2S 系列材料为例,来讨论一下有关亮度饱和机理的一些问题。对于亮度饱和来说,最容易理解的理由为,产生发光的离子(以下简称发光中心)的大部份在高输入能量激发下上升到激发状态 1. Introduction With the development of high-definition large-screen display, CRT screen input load is also growing, so that it is easy to cause phosphor aging (especially the brightness saturation), reduce reliability. This report uses the Y_2O_2S series of materials that are prone to produce saturated brightness as an example to discuss some of the issues regarding the saturation of brightness. The reason that brightness is most easily understood is that most of the luminescent ions (hereinafter referred to as luminescence centers) are excited to the excited state under high input energy