Eu^(3+)掺杂ZnAl_2O_4/SiO_2微晶玻璃制备与发光性能  

Preparation and Luminescent Properties of Eu^(3+) Doped ZnAl_2O_4/SiO_2 Glass-ceramics

作　　者：崔祥水 李巍 张劭锦[1] 陈文哲[1,3] 

机构地区：[1]福州大学材料科学与工程学院,福州350116 [2]福建工程学院材料科学与工程学院,福州350118 [3]厦门理工学院材料科学与工程学院,厦门361024

出　　处：《人工晶体学报》2015年第3期632-637,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(61108056);福建省教育厅基金(JA14223)

摘　　要：采用溶胶-凝胶法制备Eu3+掺杂的Zn Al2O4/Si O2(ZAS)块状透明微晶玻璃发光材料。利用X射线衍射(XRD),透射电子显微镜(TEM)和荧光光谱(PL)等测试手段,系统研究了不同Eu3+掺杂浓度对ZAS发光性能的影响以及不同热处理温度对ZAS∶Eu3+发光性能的影响。结果表明,ZAS∶Eu3+在611 nm处具有强烈的红光发射峰,发射强度随着Eu3+掺杂浓度的增加,出现浓度淬灭效应,当掺杂量为20mol%时,发光强度最大;随着热处理温度的升高,存在高温淬灭效应,当热处理温度为900℃时,材料发光强度最优。CIE色度图分析表明,ZAS∶0.20Eu3+是一种潜在、优良的红光显示微晶玻璃材料。Transparent bulk glass-ceramics of Eu3 ＋doped Zn Al2O4/ Si O2（ ZAS） were synthesized by solgel method. The influence of Eu3 ＋concentration and heat-treated temperatures on the luminescence of ZAS∶ Eu3 ＋glass-ceramics were studied by X-ray diffraction（ XRD）,transmission electron microscopy（ TEM）,and photoluminescence（ PL） spectra. The results show that ZAS ∶ Eu3 ＋emits intense red emission with a maximum at 611 nm originating from the5D0→7F2transition of Eu3 ＋. The emission intensity increases with increasing Eu3 ＋concentration and it reaches the maximum when the doping level is 20mol%,but concentration quenching behavior has been observed. When the heat-treated temperature is 900 ℃,the luminescence intensity is optimal,and a high temperature quenching effect occurs as heattreated temperature increases. The excellent Commission International de I＇Eclairage（ CIE） chromaticity coordinates indicates that ZAS∶ 0. 20Eu3 ＋glass-ceramic is a good material for red color display.

关 键 词：溶胶-凝胶法 ZnAl2O4/SiO2微晶玻璃 发光性能 

分 类 号：O482.31[理学—固体物理]