共掺Tm3＋离子对CaAlSiN3∶Eu2＋红色荧光粉发光性能的影响  

Influence of Tm^(3+) Codopant on Luminescence Properties of CaAlSiN_3∶Eu^(2+) Phosphor

作　　者：张浩然[1] 王劲[1] 雷炳富[1] 刘应亮[1] 

机构地区：[1]广东省光学农业工程技术研究中心华南农业大学材料与能源学院,广州510642

出　　处：《应用化学》2016年第11期1310-1315,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21171071,21371062);广东省自然科学基金(S2013030012842)资助~~

摘　　要：通过高温固相法,合成了Eu^(2+)单掺和Eu^(2+)、Tm^(3+)共掺CaAlSiN_3荧光粉。结合荧光光谱、余辉发射光谱和余辉衰减曲线及热释发光等测试手段对其进行了表征分析。结果表明,CaAlSiN_3∶Eu^(2+)具有主峰位于630 nm的明显的红色长余辉发光;共掺杂Tm^(3+)离子的引入,产生了654和800 nm的荧光和余辉,同时,Tm^(3+)的共掺,使CaAlSiN_3∶0.1%Eu^(2+),Tm^(3+)样品位于89.0℃热释光峰位消失,表明Tm^(3+)共掺杂改变了CaAlSiN_3∶Eu^(2+)荧光粉中的陷阱能级及其分布,从而减弱了CaAlSiN_3∶Eu^(2+)的630 nm红色可见光部分余辉发光性能。A series of Eu2＋ single doped and Tm3 ＋ co-doped CaA1SiN3 phosphors were synthesized by high temperature solid-reaction method. Photoluminescence, afterglow emission and thermoluminescence glow curve investigations indicate that CaA1SiN3：0.1% Eu2 ＋ sample possesses excellent photoluminescence properties with broad emission band located at about 630 nm. The introduction of Tm39 eodopant creates new emission bands located 654 nm and 800 nm, respectively, which are originated from Tm39 in CaA1SiN3 matrix. However, the Tm3 ＋ codopant causes the disappearance of 89.0℃ thermoluminescence glow peak, which indicates that the introduction of Tm3＋ has changed the defect distribution and their concentrations, thus deceasing the visible 630 nm red light afterglow of CaA1SiN3 ： Eu2＋.

关 键 词：CaAlSiN3 Eu2+ 稀土共掺杂 长余辉发光 陷阱 

分 类 号：O611.3[理学—无机化学] O613.6[理学—化学]