红色荧光粉是实现低色温白光LED应用于家用照明中必不可少的一种发光材料。利用能量传递原理，通过稀土（Eu2+或者Tb3+）与Mn2+共掺杂,增强Mn2+红色发光由于其能量传递效率不高一直困扰着Mn2+激活的红色荧光粉的发展和应用。 本项目拟从能量传递体系设计出发，通过稀土双掺杂（Eu2+, Tb3+），构建一个多通道的Eu2+→Tb3+→Mn2+能量传递模式，克服了单纯稀土与Mn2+共掺杂能量传递效率不高、能量传递通道较少等缺点，利于提高其能量传递效率，增强Mn2+的红色发射强度。利用高温固相反应方法，围绕氯氧化物为基质展开稀土单掺杂(Eu2+)，双掺杂(Eu2+,Tb3+)以及叁掺杂(Eu2+,Tb3+,Mn2+)进行研究。研究材料制备过程中的制备方法（条件），基质组成、浓度大小对其发光特性、能量传递行为的影响，阐明相关机理并建立叁掺杂Eu2+→Tb3+→Mn2+的发光动力学模型。

Red-emitting phosphor is an essential part for phorsphor-convered white light-emitting diodes with low color-temperature for application in the general lighting. A red-emitting phosphor can be obtained through energy transfer (ET) from rare earth (Eu2+/Tb3+) to Mn2+, however, this phosphor can not be further developed and applied in WLEDs because of the ET enfficiency from rare earth (Eu2+/Tb3+) to Mn2+ is not efficient. Thus, for intensifing the red-emitting intensity of Mn2+, the project intend to enhance the ET effciency from rare earth (Eu2+/Tb3+) to Mn2+ by double doping rare earth (Eu2+ and Tb3+) and establish a Eu2+→Tb3+→Mn2+ energy transfer modes with much more transfer-channles. In our project, we chose oxychloride as host materials and studied the luminescence properties and energy transfer behavior of single- (Eu2+)、dual-(Eu2+→Tb3+) and tridoped (Eu2+,Tb3+,Mn2+) oxychloride by tuning the preparation meathod (condition)、 composition of host and concentraion, and further discuss the relevant mechnism, established the luminescence kinetics about Eu2+→Tb3+→Mn2+.