温度控制的Eu3+和Dy3+掺杂α-NaYF4微晶玻璃的荧光光谱研究

摘要

采用熔融冷却退火法制备了Eu3+单掺杂和Eu3+-Dy3+共掺杂的四方相α-NaYF4微晶玻璃，通过x射线衍射研究了Eu3+掺杂的α-NaYF4微晶玻璃的结构。在25~300℃温度范围内，测试了Eu3+单掺杂和Eu3+-Dy3+共掺杂α-NaYF4微晶玻璃的变温光谱，研究了温度对Eu3+和Dy3+发射光谱的调制作用。结果发现温度的增加导致了Eu3+和Dy3+离子发射峰的荧光强度逐渐减弱。%Eu3+ and Dy3+ doped transparent glass ceramics containingα-NaYF4 nanocrystals were fabricated by a melt-quenching method and subsequent heating. The structure of the glass-ceramic is studied by X-ray diffrac-tion. The temperature controlled fluorescence spectra of Eu3+ and Dy3+ doped transparent glass ceramics containingα-NaYF4 are studied at temperature range from 25 to 300 ℃. It is found that the fluorescence intensity of the Eu3+and Dy3+ ions decreases with temperature increase.