Intense blue up-conversion emission in Tm3 +/Yb3 + co-doped phosphate glass
Intense blue up-conversion emission in Tm3 +/Yb3 + co-doped phosphate glass
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DOI：
10.1016/j.jnoncrysol.2012.10.014
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发表时间：
2013-01
影响因子：
3.5
通讯作者：
Chengguo Ming;F. Song;Hanxiong Liu
中科院分区：
文献类型：
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作者：
Chengguo Ming;F. Song;Hanxiong Liu
采用高温熔融法制备了不同Tm 3+浓度的Tm 3 +/Yb 3+共掺磷酸盐玻璃。在975 nm激发下测量了样品的上转换（UC）发射光谱。当Tm ~（3+）掺杂量为0.5mol%时，样品在477 nm处有很强的紫外蓝光发射。通过对UC发射的功率谱和布居过程的分析，发现Tm ~（3+）和Yb ~（3+）之间的能量跃迁存在光子雪崩现象，导致了477 nm处的强蓝色UC发射。通过这种方式，掺杂Tm 3+的材料的发光效率将大大提高。本文的研究工作对开发UC发光材料具有一定的指导意义。
Tm3+/Yb3+co-doped phosphate glasses with different concentrations of Tm3+were prepared by high-temperature melting method. The up-conversion (UC) emission spectra of the samples were measured under 975nm excitation. The blue UC emission at 477nm in the sample doped with 0.5mol% Tm3+is very strong. By analyzing the power spectra and population processes of the UC emission, we found that photon avalanche phenomenon has existed in the energy transition between Tm3+and Yb3+ions, which results in the strong blue UC emission at 477nm. By this way, the luminous efficiency of the materials doped with Tm3+will be greatly improved. Our research will be helpful in developing UC emission materials.