新型红色荧光粉KMgLa(PO_4)_2∶Eu^(3+)的发光特性（英文）  

Luminescence Properties of Novel Red Phosphor KMgLa(PO_4)_2∶Eu^(3+)

作　　者：白琼宇 李响[1] 田植 李勇[1] 李婷[1] 袁小先 王志军[1] 李盼来[1] 杨志平[1] 

机构地区：[1]河北大学物理科学与技术学院,保定071002

出　　处：《人工晶体学报》2016年第8期2016-2021,共6页Journal of Synthetic Crystals

基　　金：National Natural Science Foundation of China(50902042);Natural Science Foundation of Heibei Province,China(A2014201035,E2014201037);Research Foundation of Education Bureau of Hebei Province,China(ZD2014036,QN2014085);Training Program of Innovation and Entrepreneurship for Undergraduates of Hebei University(2014041,2015063)

摘　　要：采用高温固相法制备了Eu^(3+)掺杂的KMgLa(PO_4)_2荧光粉。采用X射线衍射技术及光谱技术研究了材料的晶相及发光特性。研究结果显示,少量的Eu^(3+)并未影响KMgLa(PO_4)_2的晶相;以260 nm紫外光或394 nm近紫外光作为激发源时,KMgLa(PO_4)_2∶Eu^(3+)都发射红色光,主发射峰位于595 nm,对应Eu^(3+)的~5D_0→~7F_2跃迁发射;随着Eu^(3+)掺杂量的逐渐增大,对应KMgLa(PO_4)_2∶Eu^(3+)材料的发射强度随之增大,当掺杂量为0.06Eu^(3+)时,发射强度最大,且存在浓度猝灭现象,对应的临界距离为1.696 nm;材料的CIE参数显示,材料位于红色区域。A series of Eu^3 ＋ doped KMgLa （ PO4 ） 2 were prepared via a high-temperature solid-state method. The phase present of phosphor was characterized by a powder X-ray diffraction（ XRD） , and the spectra of phosphors were measured by the fluorescence spectrophotometer. Under the 260 nm or 394 nm excitation,KMgLa （ PO4 ）2 ： Eu^3 ＋ presents an obvious red emission, and the strongest emission peak locates at 595 nm, which is ascribed to the ^5D0 →^7F2 transition of Eu^3＋. The emission intensity of phosphors can be tuned by changing the Eu3＋ concentration, and the optimal Eu^3＋ doping concentration is 0. 06,and there is the concentration quenching effect of Eu^3＋ in KMgLa （ PO4 ）2,and the critical distance is 1.696 nm. Its CIE chromaticity coordinates located in the red region.

关 键 词：发光 荧光粉 KMgLa(PO4)2 铕离子 

分 类 号：O482.31[理学—固体物理]