| 单一基质白光荧光粉Ba_2B_2O_5:Dy~(3+)的制备与发光性能 |
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| 引用本文： | 杨志平,潘飞,宋延春,韩月,赵青.单一基质白光荧光粉Ba_2B_2O_5:Dy~(3+)的制备与发光性能[J].河北大学学报(自然科学版),2012,32(4):358-362. |
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| 作者姓名： | 杨志平 潘飞 宋延春 韩月 赵青 |
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| 作者单位： | 1. 河北大学物理科学与技术学院,河北保定,071002
2. 河北大学电子信息工程学院,河北保定,071002 |
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| 基金项目： | 河北省自然科学基金资助项目(F2009000217) |
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| 摘 要： | 采用高温固相法合成了Ba2B2O5:Dy3+荧光粉材料,并对其发光性质进行了研究.样品发射光谱为典型的双峰谱线,分别位于483和575nm处,对应Dy3+的4F9/2→6 H15/2和4F9/2→6 H13/2特征跃迁.激发光谱为多峰锐谱,主峰位于348和386nm处,和UVLED管芯匹配.讨论了Dy3+物质的量分数对发射光谱的影响,结果随Dy3+物质的量分数的增大,黄蓝发射的相对强度比(IY/IB)基本不变,样品的发光强度呈现先增大后减小的趋势.研究了电荷补偿剂Li+对材料发光强度的影响,随着Li+的物质的量分数增加发光强度先增大后减小.测量并标定了Dy3+不同物质的量分数下样品的色坐标,均呈现白光发射.
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| 关 键 词： | Ba2B2O5:Dy3+ 发射光谱 激发光谱 电荷补偿 |
Fabrication and luminescent properties of single host white phosphors Ba2B2O5:Dy3+ |
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| YANG Zhi-ping
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PAN Fei
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SONG Yan-chun
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HAN Yue
,
ZHAO Qing.Fabrication and luminescent properties of single host white phosphors Ba2B2O5:Dy3+[J].Journal of Hebei University (Natural Science Edition),2012,32(4):358-362. |
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| Authors: | YANG Zhi-ping PAN Fei SONG Yan-chun HAN Yue ZHAO Qing |
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| Institution: | 1(1.College of Physics Science and Technology,Hebei University,Baoding 071002,China; 2.College of Electronic and Informational Engineering,Hebei University,Baoding 071002,China) |
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| Abstract: | The Ba2B2O5:Dy3+ phosphors were synthesized by high temperature solid-state reaction.The luminescent properties were investigated.The main peak of emission spectra locating at 483 nm and 575nm,which correspond to the 4F9/2→6H15/2 and 4F9/2→6H13/2 typical transition of Dy3+.The main peak of excitation spectra located at 348 nm and 386 nm,which matched with UVLED tube core.The effect of Dy3+ concentration on the emission spectrum was discussed.The result showed that the ratio of yellow emission to blue emission(Y/B) was unchanged and the luminescent intensity firstly increased,then decreased with increasing Dy3+ concentration.The effect of charge compensator Li+ on the luminescent intensity was also explored,the luminescent intensity firstly increased with increasing Li+ concentration,then decreased.Color coordinates were measured and marked under different Dy3+ concentrations,and all of the samples showed the white light emission. |
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| Keywords: | Ba2B2O5:Dy3+ emission spectra excitation spectra charge compensation |
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