Photoluminescence and its Enhancement of Pr3+-Doped BaTiO3 Phosphor
Photoluminescence and its Enhancement of Pr3+-Doped BaTiO3 Phosphor
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DOI：
10.1143/jjap.44.l708
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发表时间：
2005-05
影响因子：
1.5
通讯作者：
Juan Li;Y. Wu;M. Kuwabara
中科院分区：
文献类型：
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作者：
Juan Li;Y. Wu;M. Kuwabara
我们成功地开发了一种新的Pr 3+掺杂的BaTiO 3磷光体，其中添加了Mg，其表现出强的红色发射，使用高浓度溶胶-凝胶工艺，其中所获得的凝胶在1200°C下烧制2 h。光致发光是由于Pr 3+的4f内跃迁，主要是从激发态1D 2到基态3 H4。通过添加0.5mol%Mg，在0.1mol%Pr掺杂的BaTiO 3中实现了约60倍的光发射增强。这种发光增强的基础上讨论的有效能量转移的增量之间的重叠吸收带的BaTiO_3和4f-5d带的Pr ~（3+），和有效的电荷补偿通过添加Mg。
We succeeded in developing a new praseodymium (Pr3+)-doped BaTiO3 phosphor with the addition of Mg, which exhibits a strong red emission, using a high-concentration sol–gel process in which the obtained gel was fired at 1200°C for 2 h. The photoluminescence is due to intra-4f transitions of Pr3+, mainly from the excited states 1D2 to the ground states of 3H4. An approximately 60 fold enhancement of light emission in 0.1 mol% Pr-doped BaTiO3 was achieved by adding 0.5 mol% Mg. This emission enhancement is discussed on the basis of the increments of effective energy transfer between the overlapped absorption band of BaTiO3 and the 4f–5d band of Pr3+, and on the effective charge compensation by the addition of Mg.