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Tb/Eu 共掺锌硼磷酸盐白光发光玻璃的制备及其发光性能
Synthesis and Luminescent Properties of Tb/Eu Co-doped Zinc Borophosphate Glasses for White Light Generation
- 发光学报 2014年35卷第8期 页码：897-904
- 作者机构：
南京工业大学 材料科学与工程学院,江苏 南京,210009
- 作者简介：
- 基金信息：国家自然科学基金（51202111）资助项目()
DOI：10.3788/fgxb20143508.0897
中图分类号： O482.31收稿日期：2014-04-26，
修回日期：2014-06-03，
纸质出版日期：2014-08-03
- 稿件说明：
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顾路顺, 施楠, 张乐等. Tb/Eu 共掺锌硼磷酸盐白光发光玻璃的制备及其发光性能[J]. 发光学报, 2014,35(8): 897-904
GU Lu-shun, SHI Nan, ZHANG Le etc. Synthesis and Luminescent Properties of Tb/Eu Co-doped Zinc Borophosphate Glasses for White Light Generation[J]. Chinese Journal of Luminescence, 2014,35(8): 897-904
顾路顺, 施楠, 张乐等. Tb/Eu 共掺锌硼磷酸盐白光发光玻璃的制备及其发光性能[J]. 发光学报, 2014,35(8): 897-904 DOI： 10.3788/fgxb20143508.0897.
GU Lu-shun, SHI Nan, ZHANG Le etc. Synthesis and Luminescent Properties of Tb/Eu Co-doped Zinc Borophosphate Glasses for White Light Generation[J]. Chinese Journal of Luminescence, 2014,35(8): 897-904 DOI： 10.3788/fgxb20143508.0897.
摘要
采用熔体冷却法，通过控制玻璃基质组成及稀土离子添加量，制备了Tb、Eu单掺和Tb/Eu共掺的锌硼磷酸盐低熔点发光玻璃。测试了样品的红外光谱、吸收光谱、激发与发射光谱和荧光寿命，并计算CIE色坐标，研究了材料的微观结构及发光性能。结果表明：样品中部分Eu
3+
被还原为Eu
2+
，在380 nm波长激发下，Tb/Eu共掺发光玻璃同时出现Eu
3+
红光、Tb
3+
绿光和Eu
2+
蓝光的特征发射。增加基体中B
2
O
3
含量能强化玻璃网络结构，并改变Eu
2+
/Eu
3+
比例。发射光谱和荧光寿命测试表明，共掺的发光玻璃中存在Eu
2+
Eu
3+
，Eu
2+
Tb
3+
和Tb
3+
Eu
3+
的能量传递。改变Tb、Eu的掺杂浓度能够有效改变发光玻璃的发光强度和颜色，最终得到色坐标为（0.318 7，0.286 1）、色温6 480 K的发光玻璃。
Abstract
Tb/Eu co-doped zinc borophosphate glasses were successfully synthesized by melt quenching method. The effect of glass matrix composition and rare erath ions concentration were discussed. The structural and luminescent properties were characterized by Fourier transform infrared (FT-IR) spectra
absorption spectra
photoluminescence(PL) spectra
fluorescence lifetimes and colorimetric analysis. Eu
3+
ions were partly reduced to Eu
2+
during the synthesization in air. Under 380 nm excitation
white light emission was observed composited by emission at 612 nm and 590 nm for Eu
3+
544 nm and 488 nm for Tb
3+
and 430 nm for Eu
2+
. The FT-IR spectra showed that the structure of glass matrix changed when B
2
O
3
content increased
which affected the Eu
2+
/Eu
3+
ratio in glass samples. The spectra results show that Eu
2+
ions are donors which can transfer energy to Eu
3+
and Tb
3+
. Lifetime analysis proved that Tb
3+
ions can transfer energy to Eu
3+
through nonradiative transition. The luminescence intensity and emission color can be efficiently controlled by changing glass composition and rare earth ion concentration. Optimized white light with CIE(0.3187
0.2861) and correlated color temperature at 6 480 K was obtained when the mole fractions of Eu and Tb were both 1.5%.
关键词
Keywords
references
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