【摘要】 自从 2 0世纪初发现长余辉现象以来 ,长余辉材料的发展取得了长足进展。从长余辉现象的发现到 2 0世纪 90年代 ,性能最好的长余辉材料为金属硫化物体系长余辉材料。从 1992年起 ,新型铝酸盐长余辉材料的发展十分迅速 ,它的发光强度、发光时间、化学稳定性都较第一代长余辉材料有很大改进 ,长余辉材料的发展进入了一个新的阶段。在铝酸盐体系实现了蓝紫、蓝绿、黄绿、黄橙色发光 ,其中的蓝绿、黄绿两种长余辉材料是目前发光性能最好的长余辉材料。在硅酸盐体系实现了蓝、蓝绿、绿、黄绿、黄色发光 ,而且化学性质较铝酸盐体系稳定。特别是硅酸盐体系蓝色长余辉材料发光强度及发光时间大大超过铝酸盐体系蓝紫色长余辉材料 ,是另一类极有前途的新型长余辉材料。红色长余辉材料的发展也取得了很大进步 ,目前在多个体系实现了红色自发光。性能最好的红色长余辉材料发光亮度达到CaS类红色长余辉材料的 6倍以上 ,余辉时间达6～ 8小时。长余辉材料的应用研究也进展迅速。更多还原

【Abstract】 Since its invention in the nineteenth century, the long afterglow phosphors have been improved greatly. Up to 1990s, the best product is metal sulfide long afterglow phosphors. The aluminates long afterglow luminescent material was invented at the beginning of the nineties, its luminescent brightness, long afterglow characteristics and stability were obviously superior to the above sulfide series products. However these phosphors still have bad anti moisture character, and they have strict restriction over the raw material’s purity and form, besides, the production cost was higher, therefore it also can not satisfy the requirement of usage very well. In 1998, silicate long afterglow phosphors are synthesized successfully, which having excellent chemistry stability. What is more, the development of red long afterglow phosphors also made great progress. The brightness of the best red phosphors is six times than that of CaS, the decay time is about 6～ 8 hours . Base on lots of literatures and experiments, the development, type, preparation and mechanism of the long afterglow phosphors are studied, and the properties of phosphors are compared with them in this paper.更多还原