Er^(3+)/Yb^(3+)/Tm^(3+)共掺杂氟化物中红色上转换发光研究

Study on Red Up-Conversion Luminescence of Fluoride Glasses Do ped with Er^(3+), Yb^(3+) and Tm^(3+)

氧化铒的质量增加到原来的10倍左右时发现两种配方的发光性质有明显不同。根据情况作者研究了Er3+ /Tm3+ ,Er3+ /Er3+ 和Er3+ /Yb3+ /Tm3+ 发光系统在980nm抽运下的荧光光谱和上转换发光的性质,以及在声子能量较低的氟化物中,3个发光系统建立的优先性和Er3+ 离子浓度的关系。根据实验发现当Er3+ 离子浓度由小逐渐变大时,绿光和红光的强弱比例也有明显的变化。其中作者认为起决定性作用的是Er3+ 离子浓度。因为在均匀体系中每个稀土离子的和另一个稀土离子的结合形成发光系统的机会是平等的,组成发光系统的稀土离子间的距离变化,即其中一种起决定作用的离子浓度变化时,那么它所组成的发光系统也就相应发生变化(稀土离子的优先结合性也会在此得到体现) ,从而发出的主色的光也就跟着变化。

When the quality of Er2O3 is 10 times the former, the authors found that its character of up-conversion luminescence is distinct. Then the authors studied the luminescence system of Es3+/Tm3+, Er3+/Er3+ and Er3+ /Yb3+ /Tm3+ and their character of up-conversion and fluorescence spectrum at 980 nm. In addition, the authors studied the relation between the three systems and the consistency of Er2O3. The authors found that the intensity of green and red light changed with the consistence of Er3+ in the experiment. It's the consistence of E3+ that is the most causative. The chance is equal for each lanthanonion that makes up the luminescence system in the uniformity matter. With the distance between each pair of lanthanonions in the luminescence system is changed, the luminescence system and the color of the up-conversion luminescence also changed.