红外激发白光LED用上转换发光材料探析

在火灾等突发事故的情况下,消防应急照明显得尤为重要,它不仅是人们疏散的保障,也是灭火救援等消防作业的保证。传统式白炽灯照明已不符合现今智能化建筑的需求。白光LED固体照明光源穿透力强、亮度高、节能、环保、寿命长的特点使其已广泛应用于消防应急照明领域。采用发红外光半导体化合物芯片和可被这种红外光有效激发而发射红、绿、蓝可见光的上转换荧光体有机结合,制成新型白光LED,不仅为实现白光LED照明提供一条新途径,同时拓宽了红外半导体芯片市场及无机上转换发光材料的应用。

Infrared Stimulated Luminescence Conversion White LED to Spend Materials

In the fire and other unforeseen circumstances,the fire emergency lighting is particularly important,it is not only a guarantee for the people to evacuate,but also for fire rescue operations.Traditional incandescent lighting no longer meets the needs of today＇s intelligent building.Solid white LED lights are widely used in fire emergency lighting for its penetrating power and high brightness,energy saving,environmental protection and long life.New white LED made of infrared semiconductor with fat chips and the emission of red,green,and blue visible light-conversion phosphor combination that can be effectively excited,there is a promising prospect for white LED lighting.