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Eu2+掺杂硼硅酸镁玻璃的发光性能

Luminescent Properties of Eu2+ Doped Borosilicate Glass

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摘要

利用高温固相法合成了Eu2+掺杂的新型蓝色硼硅酸盐发光玻璃,讨论了不同掺杂浓度下硼硅酸镁玻璃体系中Eu—O键共价性的变化以及氧原子周围不同配位环境对MgO-SiO2-B2O3玻璃发光性能的影响。利用X射线衍射仪和荧光光谱仪对该玻璃体系进行了结构表征和性能测试。在紫外-可见光激发下,Eu2+掺杂硼硅酸镁玻璃的荧光发射光谱明显出现一个较为宽泛的发射谱带。

Abstract

During the recent decades years, the luminescence properties of divalent europium have attracted more and more interest for its wide emission spectrum ranging from blue to blue-green. As for the rare earth optical glasses, the rare earth ion dopants with high brightness and stable performance are always the important point, and Eu2+ doped borosilicate glasses also have these properties.Herein, by using the high-temperature solid-phase synthesis method, a typical blue borosilicate glass named MgO·SiO2·B2O3∶Eu2+ was synthesized. The influence of different Eu2+ doped concentrations on the luminescent properties of borosilicate glass was studied. X-ray diffraction and luminescence spectroscopy were used to characterize this glass samples. Excited by the UV light, the emission spectrum of the glass phosphor consists of two bands, peaking at about 460 nm and 500 nm, which are attributed to the covalence property of the Eu—O bond and the different coordination environments around the Eu2+ ions in the host lattice. The energy transfer process is accompanied by the loss of energy. In addition, with the concentration of divalent europium ions increasing, fluorescence quen-ching occurred,so emission intensity of the 500 nm emission band is weaken.The glass phosphor has strong excitation at around 300~440 nm and emitted a typical bright blue luminescence. And with the mole fraction of doped Eu2+ increasing, the peak of emission spectrum shows a red shift, and the intensity remarkably decreased. Thus it could have applications as a blue component in solid-state lighting devices assembled by near-UV light emitting diodes (LED) and with tricolor phosphors.

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中图分类号:O482.31

所属栏目:材料合成及性能研究

基金项目:中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室科研项目(SKL200912SIC)资助

收稿日期:2009-12-09

修改稿日期:2010-04-30

网络出版日期:0001-01-01

作者单位    点击查看

李彩霞:华东师范大学 化学系, 上海 200062
李强:华东师范大学 化学系, 上海 200062

联系人作者:李彩霞(51080606011@ecnu.cn)

备注:李彩霞(1980-), 女, 河南许昌人, 主要从事无机非金属功能材料的研究。

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引用该论文

LI Cai-xia,LI Qiang. Luminescent Properties of Eu2+ Doped Borosilicate Glass[J]. Chinese Journal of Luminescence, 2011, 32(2): 149-153

李彩霞,李强. Eu2+掺杂硼硅酸镁玻璃的发光性能[J]. 发光学报, 2011, 32(2): 149-153

被引情况

【1】徐磊华,强颖怀,江利,顾永琴. 处理温度及CdS量子点对Eu3+掺杂SiO2干凝胶光致发光性质的影响. 发光学报, 2011, 32(8): 784-788

【2】任林娇,杜晓晴,雷小华,金雷,陈伟民. Dy3+含量对Eu2+,Dy3+共掺高硅氧发光玻璃发光性能的影响. 发光学报, 2012, 33(11): 1161-1165

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