稀土发光材料中的能量传递与发光颜色调控  

Recent Progress in Phosphors with Energy Transfer for w-LED

作　　者：李凯[1,2] 连洪洲[1] 尚蒙蒙 林君[1] 

机构地区：[1]中国科学院长春应用化学研究所稀土资源利用国家重点实验室,吉林长春130022 [2]中国科学院大学,北京100049

出　　处：《中国稀土学报》2017年第1期19-41,共23页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金项目(91433110)及面上项目(51472234)资助

摘　　要：白光LED因被认为是下一代的室内照明光源而受到广泛关注。作为白光LED不可或缺的一部分,荧光粉一直是发光材料研究中的重要部分。随着对白光LED性能要求的不断提高,开发具有丰富发光颜色的荧光粉非常重要。而利用激活剂与敏化剂之间的能量传递作用是获得丰富发光颜色荧光粉的一种重要方法。本文综述了近期基于能量传递过程获得不同体系荧光粉的研究进展,其中包括Eu^(2+)-Mn^(2+)/Tb^(3+),Eu^(2+)-Tb^(3+)-Mn^(2+)/Eu^(3+)/Sm^(3+),Ce^(3+)-Mn^(2+)/Tb^(3+)/Dy^(3+)/Cr^(3+)/Pr^(3+)/Eu^(2+),Ce^(3+)-Tb^(3+)-Mn^(2+)/Eu^(3+)/Sm^(3+),Bi^(3+)-Eu^(3+)/Sm^(3+),Tb^(3+)-Eu^(3+)/Sm^(3+),基质-Ln^(3+)等体系,这为稀土荧光粉的进一步研究提供一定的指导作用。Continual attention is focused on white-lighting-emitting diodes（w-LEDs） since it is considered to be the next indoor lighting source. As an indispensable component in w-LED,phosphors is one of important parts of investigation on luminescent materials. It is necessary to develop novel phosphors with abundant emission colors with the increasing requirements of LED properties. Utilizing energy transfer（ET） between the sensitizer and acceptor in phosphors is a good way to obtain tunable emission color. Therefore,herein,we summary many recent ET systems consisting of Eu^2＋-Mn^2＋/Tb^3＋, Eu^2＋-Tb^3＋-Mn^2＋/Eu^3＋/Sm^3＋, Ce^3＋-Mn^2＋/Tb^3＋/Dy^3＋/Pr^3＋/Cr^3＋/Eu^2＋,Ce^3＋-Tb^3＋-Mn^2＋/Eu^3＋/Sm^3＋,Bi^3＋-Eu^3＋/Sm^3＋,Tb^3＋-Eu^3＋/Sm^3＋and host-Ln^3＋,which show the tunable emission color from ultraviolet to blue and green,blue to green,yellow,orange and pink/red,cyan to green,orange and pink/red,and green to yellow/orange and red. Based on this,this review would be a good reference to benefit the design and investigation of phosphors potentially applied in LEDs with ET in them.

关 键 词：能量传递 荧光粉 白光LED 稀土 

分 类 号：O482.3[理学—固体物理]