Ce和Tb共掺杂多硼酸盐荧光体的光谱特性  

Spectral Characteristics of Ce and Tb Co-doped Multi-borat

作　　者：王清珊[1] 

机构地区：[1]延边大学理学院化学系,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2008年第4期273-275,共3页Journal of Yanbian University（Natural Science Edition）

摘　　要：采用高温固相法合成了Zn4B6O13:Ce/Tb和Ca3B7O13Cl:Ce/Tb光致发光材料,它们的发射光谱峰值分别位于542 nm和553 nm绿光区,并都归属Tb 3+的5D4→7F5特征能级跃迁,由于基质的组成不同,Tb3+的发射位置有所差异.依据Dexter理论分析,确定了在这两种不同基质中存在Ce3+→Tb3+的能量传递,且Ce3+是Tb3+的高效敏化剂.A series of photoluminescence materials Zn4B6O13 ： Ce/Tb and Ca3B7O13Cl： Ce/Tb were synthesized by high temperature solid state method. The emission spectra of phosphors located at 542 nm and 553 nm green zone respectively, they are due to the 5^D4→7^F5 level transition of Tb^3＋ ; resultingly the different components of the matrix Tb^3＋ location of the launch of the difference. According as the energy transfer theory of Dexter, energy transfer Ce^3＋→Tb^3＋ is found in two phosphors, and Ce^3＋ is the high efficiency sensitizer of Tb^3＋.

关 键 词：Ce和Tb共激活 发光 光谱特性 能量传递 

分 类 号：O644[理学—物理化学]