Ca12Al14O33:Eu2+和Ca12Al14O33:Eu2+,Re3+(Re=Dy,La,Nd)长余辉发光粉的燃烧合成及其发光性能

 全文下载：2014010005

 张建英， 韩荣江， 陈克正*

（青岛科技大学 材料科学与工程学院， 山东 青岛 266042）

摘要： 采用燃烧法制备出Ca12Al14O33: Eu2+和Ca12Al14O33: Eu2+, Re3+(Re=Dy, La, Nd)靛蓝光长余辉发光粉。分别利用XRD和FESEM对产物的物相结构和形貌进行了表征，用光致发光测试（PL）和余辉衰减曲线对样品的发光性能进行了分析。结果表明上述长余辉发光粉的晶体结构属于体心立方相七铝酸十二钙；所制备的Ca12Al14O33: Eu2+、Ca12Al14O33: Eu2+, Dy3+、Ca12Al14O33: Eu2+, La3+和Ca12Al14O33: Eu2+, Nd3+长余辉发光粉的发射光谱均呈宽发射谱带，波长范围为390～530 nm，发光峰值也均位于443 nm；产物在紫外线或紫色光激发后发射靛蓝光；余辉时间分别为238，184，168和9 120 s。

关键词： Ca12Al14O33:Eu2+,Re3+； 长余辉发光粉； 燃烧法； 发光性能

中图分类号： O 482.31   文献标志码： A

Combustion Synthesis and Luminescence Properties of Ca12Al14O33:Eu2+ and Ca12Al14O33:Eu2+,Re3+ (Re=Dy,La,Nd) Long Afterglow Phosphors

ZHANG Jianying, HAN Rongjiang, CHEN Kezheng

(College of Materials Science and Engineering, Qingdao University of Science and Technology， Qingdao 266042, China)

Abstract: Indigoemitting Ca12Al14O33:Eu2+ and Ca12Al14O33:Eu2+,Re3+ (Re=Dy, La, Nd) long afterglow phosphors were synthesized by the combustion method. The phase formation and morphology of the products were characterized by XRD and FESEM, respectively, and the luminescent properties of the samples were investigated by using the photoluminescence (PL) and the afterglow decay curves. The crystal structure of the above long afterglow phosphors belongs to Ca12Al14O33with bodycentered cubic structure, and their emission spectra are all broadband from 390 to 530 nm, and their emission peaks are all at 443 nm, and these samples emit indigo light after being excited by ultraviolet or purple light. The duration time of Ca12Al14O33: Eu2+, Ca12Al14O33: Eu2+, Dy3+, Ca12Al14O33: Eu2+, La3+ and Ca12Al14O33: Eu2+, Nd3+ is 238, 184, 168 and 9 120 s, respectively.

Key words: Ca12Al14O33:Eu2+,Re3+; long afterglow phosphor; combustion method; luminescence properties

收稿日期： 20121105

基金项目： 国家自然科学基金项目（51072087）.

作者简介： 张建英（1986—），男，硕士研究生.*通信联系人.