Photoluminescence properties and energy transfer in Y2O3: Eu3+ nanophosphors
Photoluminescence properties and energy transfer in Y2O3: Eu3+ nanophosphors
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Y2O3: Eu3 纳米磷光体的光致发光特性和能量转移
DOI：
10.1088/1674-1056/23/5/057801
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发表时间：
2014-05-01
影响因子：
1.7
通讯作者：
Cui Qi-Liang
中科院分区：
文献类型：
--
作者：
Cui Hang;Zhu Pei-Fen;Cui Qi-Liang
为了提高Y2 O3：Eu 3+纳米荧光粉的颜色质量和量子效率，使其在纳米器件中具有潜在的应用前景，对Y2 O3：Eu 3+纳米荧光粉的光致发光（PL）特性进行了系统的研究。利用发射光谱、激发光谱和荧光衰减曲线，研究了C-3 i位的Eu ~（3+）向C-2位的Eu ~（3+）的能量转移过程。实验结果表明，随着Eu ~（3+）浓度的增加，能量传递过程变得越来越有效。Eu 3+在C-2位的发射是有利的，因为它具有高的辐射效率和更好的颜色质量。成功地抑制C-3 i位Eu ~（3+）的发光对于其在一般照明或显示技术中的应用特别重要。通过控制S-6位的Eu ~（3+）和C-2位的Eu ~（3+）之间的能量传递，可以提高Y_2O_3：Eu ~（3+）的量子效率和色质。
The photoluminescence (PL) properties of Y2O3: Eu3+ nanophosphors were systematically investigated with the goal of improving the color quality and quantum efficiency of Y2O3: Eu3+ nanophosphors for potential applications in nanoscale devices. The emission spectra, excitation spectra and fluorescence decay curves were employed to trace the energy transfer process from Eu3+ at C-3i site to Eu3+ at C-2 site. The experimental results show that the energy transfer process becomes more and more efficient with the increase in the Eu3+ concentration. The emission of Eu3+ at C-2 site is favorable because it has high radiative efficiency and better color quality. The successful suppress of the emission Eu3+ at C-3i is especially important for its applications in general illumination or display technology. The quantum efficiency and color quality of Y2O3: Eu3+ can be improved by controlling the energy transfer between the Eu3+ at S-6 site and Eu3+ at C-2 site.