长余辉发光材料及其在水泥基材料中的应用研究进展

长余辉发光材料是一类重要的光致发光材料,具有环保节能的特点。目前,以环保节能、安全经济为前提的蓄光型长余辉发光材料已广泛用于工艺美术、军事航空、医学放射学图像、电器、交通安全及建筑等诸多领域。从基质选择的角度出发,综述了长余辉发光材料的类型(主要为硫化物型、铝酸盐型、硅酸盐型及其他基质型)、发展历程、发光机理及常见制备方法。发光材料在合成过程中基质晶格中产生了结构缺陷和杂质缺陷,这些缺陷的存在局部地破坏了晶体内部的规则排列,当外部光源对发光材料进行照射时,电子可在各级能级间跃迁,从而产生发光现象。概述了其在新型建筑材料——发光水泥基材料中的最新研究进展,最后对长余辉发光材料及其在水泥基材料中的应用研究趋势进行了展望。

Research progress on long persistence luminescent materials and its utilization in cementitious materials

Long persistence luminescent materials is a type of important photoluminescence materials with the characteristics of environmental protection and energy saving.At present,the long afterglow luminescent materials with the premise of environmental protection and energy saving,safety and economy have been widely used in many fields such as arts and crafts,military aviation,medical radiology images,electrical appliances,traffic safety and architecture.In this paper,the types,development,luminescent mechanism and common preparation methods of long persistence luminescent materials,including sulfite,aluminate,silicate luminescent materials etc,were summarized.The structure defects and impurity defects are generated in the parent lattice of luminescent materials during the synthesis process,these defects partially have destroyed the crystal internal rules,when the external light source of luminous materials are irradiated,electrons can jump among all energy levels,thereby producing luminous phenomenon.Then,the latest research progress of luminescent cementitious materials were reviewed.Finally,the research trends of long persistence luminescent materials and its utilization in cementitious materials were prospected.